Plug-in type structure

Abstract

The utility model discloses a plug-in type structure which comprises a first pipe and a second pipe, and a first pipe joint is formed at one end of the first pipe; a first pipe joint is formed at one end of the first pipe, a second pipe joint is formed at one end of the second pipe, the second pipe joint extends into the first pipe joint, the plug-in type structure further comprises a plug-in unit used for axially limiting the first pipe joint and the second pipe joint, and the plug-in unit comprises a limiting groove, plug holes and single plug pins in one-to-one correspondence with the plug holes. The insertion hole is formed in the first pipe joint and penetrates through the inner wall of the first pipe joint; the limiting groove is formed in the outer wall of the second pipe joint, and the single bolt penetrates through the insertion hole and is limited in the limiting groove at the same time. During installation, only the second pipe joint needs to extend into the first pipe joint, and then the single bolt is inserted into the insertion hole, so that the installation is very convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connection, in particular to a plug-in structure capable of rapid assembly. Background Art

[0002] Although the threaded connection method is relatively common in pipeline connection, there are problems of cumbersome installation in the assembly process. First, to ensure the sealing effect, when installing, it is usually necessary to wind PTFE tape at the threaded connection. If the PTFE tape is wound too thick, the two connected pipelines cannot be butted; if the PTFE tape is wound too thin, leakage is likely to occur. In addition, to ensure tight fit, in the actual installation process of the above connection method, installation tools such as wrenches must be used. When the installation space is limited, the operation difficulty is often increased, and the installation efficiency is greatly affected. Summary of the Utility Model

[0003] The utility model provides a plug-in structure, aiming to overcome the above problems existing in the prior art during the assembly process.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A plug-in structure includes a first pipe and a second pipe. One end of the first pipe forms a first pipe joint; one end of the second pipe forms a second pipe joint. The second pipe joint extends into the first pipe joint. The plug-in structure further includes a plugging unit for axially limiting the first pipe joint and the second pipe joint. The plugging unit includes a limiting groove, a jack, and a single plug pin. The jack is opened on the inner wall of the first pipe joint and penetrates through the inner wall of the first pipe joint; the limiting groove is opened on the outer wall of the second pipe joint, and the single plug pin is inserted through the jack and limited in the limiting groove at the same time.

[0006] In a recommended embodiment, a first sealing ring for sealing cooperation with the first pipe joint is provided on the second pipe joint. The first sealing ring is located between the end face of the second pipe joint and the limiting groove. Compared with the limiting groove, the first sealing ring is closer to the end face of the second pipe joint, which can prevent the medium from overflowing from the plugging unit.

[0007] In a recommended embodiment, a second sealing ring is further provided between the second pipe joint and the first pipe joint. The first sealing ring is located on one side of the limiting groove; the second sealing ring is located on the other side of the limiting groove. The second sealing ring provides a second layer of protection for the seal between the second pipe joint and the first pipe joint, further enhancing the sealing effect. In addition, after the assembly is completed, the second sealing ring is closer to the end face of the first pipe joint. It can balance the extrusion force received by the first sealing ring, thereby improving the bending resistance of the overall pipeline and providing effective protection for the first sealing ring.

[0008] In a recommended embodiment, the jack and the limiting groove intersect. When a single pin is inserted through the jack, a part of the single pin is naturally limited in the limiting groove, and this structure can improve the reliability of axial limitation.

[0009] In a recommended embodiment, the first pipe joint includes a main body portion and a convex seat protruding from the main body portion, and the jack is formed in the convex seat. The setting of the convex seat can increase the length of the jack, thereby improving the reliability of the plugging unit.

[0010] In a recommended embodiment, the convex seat extends along the tangential direction of the first pipe joint. It is convenient for the processing of the first pipe joint (metal, such as copper).

[0011] In a recommended embodiment, the end face of the convex seat is a plane, and the port of the jack is formed in this plane. It is convenient for positioning and the processing of the jack.

[0012] In a recommended embodiment, the limiting groove surrounds the outer wall of the second pipe joint. During the process of the second pipe joint extending into the first pipe joint, the second pipe joint can rotate arbitrarily by 360°. When assembling the single pin, there is no need to adjust the relative angle between the second pipe joint and the first pipe joint, and the single pin can be in limiting cooperation with the limiting groove after extending from the jack, so as to facilitate the installation of the single pin.

[0013] In a recommended embodiment, the limiting groove is perpendicular to the central axis of the second pipe joint. The second pipe joint is usually made of metal, and the above structure is convenient for the turning processing of the limiting groove.

[0014] In a recommended embodiment, the jack is arranged along the tangential direction of the second pipe joint. It is convenient for the processing of the first pipe joint and the second pipe joint.

[0015] In a recommended embodiment, the jack is a through hole or a blind hole. The single pin can completely pass through the jack to enhance the reliability of the connection.

[0016] In a recommended embodiment, the first pipe further includes a first main pipe connected to the first pipe joint; the second pipe further includes a second main pipe connected to the second pipe joint.

[0017] A stepped surface is provided at the junction of the first main pipe and the first pipe joint; when the end face of the second pipe joint abuts against the above stepped surface, the jack and the limiting groove are axially aligned.

[0018] Alternatively, a stepped surface is provided at the junction of the second main pipe and the second pipe joint. When the end face of the first pipe joint abuts against the above stepped surface, the jack and the limiting groove are axially aligned. The setting of the above structure is convenient for installation. When the second pipe joint reaches the bottom, the axial alignment of the jack and the limiting groove can be automatically achieved.

[0019] In a recommended embodiment, the single pin is in a straight rod shape.

[0020] Advantages of the present utility model:

[0021] When installing the present utility model, only need to insert the second pipe joint into the first pipe joint, and then insert the single pin into the jack, and the installation is extremely convenient. In addition, the present utility model adopts the cooperation mode of the single pin and the jack for assembly, with novel concept and convenient disassembly and assembly. Description of the drawings

[0022] Figure 1 It is a three-dimensional structural schematic diagram of Embodiment 1.

[0023] Figure 2 It is Figure 1 The axial sectional structural schematic diagram in the A-A direction in

[0024] Figure 3 The sectional structural schematic diagram of the first pipe.

[0025] Figure 4 The sectional structural schematic diagram of the second pipe.

[0026] Figure 5 It is Figure 1 The radial sectional structural schematic diagram in the B-B direction in

[0027] Figure 6 The sectional structural schematic diagram when the single pin is not inserted.

[0028] Figure 7 The radial sectional structural schematic diagram of Embodiment 2.

[0029] Figure 8 The radial sectional structural schematic diagram of Embodiment 3.

[0030] Figure 9 The axial sectional structural schematic diagram of Embodiment 4.

[0031] Figure 10 The axial sectional structural schematic diagram of Embodiment 5.

[0032] Figure 11 The axial sectional structural schematic diagram of Embodiment 6. Detailed implementation manners

[0033] The present utility model will be further described in detail below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the convenience of description, only the parts related to the present utility model are shown in the drawings rather than all the structures.

[0034] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0036] In the description of this embodiment, the terms such as "above", "below", "right", etc., regarding the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and do not have special meanings.

[0037] Embodiment 1

[0038] Refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , a plug-in structure, including a first pipe 1 and a second pipe 2. Taking the dotted line in Figure 3 as the boundary, the first pipe 1 includes a first main pipe 11 and a first pipe joint 12 which are connected to each other. Taking the dotted line in Figure 4 as the boundary, the second pipe 2 includes a second main pipe 21 and a second pipe joint 22 which are connected to each other. During installation, the second pipe joint 22 extends into the first pipe joint 12, so that the first pipe 1 and the second pipe 2 are butted, and the internal media can flow through each other.

[0039] At the same time, refer to Figure 1 、 Figure 2 and Figure 5, the plug-in structure further includes a plug-in unit for axially limiting the first pipe joint 12 and the second pipe joint 22. The plug-in unit includes a limiting groove 31, a jack 32, and single pins 33 corresponding to the jacks 32 one by one, that is, one single pin 33 corresponds to one jack 32. The single pin 33 is preferably in the shape of a straight rod, but can also be other shapes. As can be seen from the figure, in this embodiment, only one jack 32 is provided on the side wall of the first pipe joint 12. The single pin 33 is inserted into the jack 32. At the same time, for the convenience of disassembly and assembly, the end of the single pin 33 has a protruding hand-held part (not marked in the figure).

[0040] In this embodiment, the limiting groove 31 surrounds the outer wall of the second pipe joint 22, and the limiting groove 31 is perpendicular to the central axis of the second pipe joint 22. This is not only beneficial to processing, but also during the process of the second pipe joint 22 extending into the first pipe joint 12, the second pipe joint 22 can rotate arbitrarily by 360°. When assembling the single pin 33, there is no need to adjust the relative angle between the second pipe joint 22 and the first pipe joint 12, and the single pin 33 can be in limiting cooperation with the limiting groove 31 after extending from the jack 32, thus facilitating the installation of the single pin 33. At the same time, referring to Figure 4 , in order to enable the (front) end face 220 of the second pipe joint 22 to be axially positioned with the jack 32 and the limiting groove 31 when extending into the first pipe joint 12, a stepped surface 200 is provided at the junction of the second pipe joint 22 (rear end) and the second main pipe 21. When the stepped surface 200 of the second pipe joint 22 abuts against the end face 120 of the first pipe joint 12, the limiting groove 31 is just aligned with the jack 32.

[0041] At the same time, referring to Figure 6 , the first pipe joint 12 of this embodiment includes a main body part 121 and a convex seat 122 protruding from the main body part 121. The convex seat 122 extends along the tangential direction of the first pipe joint 12. For the convenience of processing, the convex seat 122 is a symmetric structure. The jack 32 is provided in the convex seat 122, and the jack 32 is arranged along the tangential direction of the second pipe joint 22 and penetrates the inner wall of the main body part 121 at the same time. The setting of the convex seat 122 can lengthen the length of the jack 32, thereby improving the reliability of the plug-in unit. In addition, the end face 1220 of the convex seat 122 is a plane, and the jack 32 is provided on this plane 1220, which helps with positioning and the processing of the jack 32.

[0042] In the recommended implementation manner, the jack 32 is a through hole, and the single pin 33 can completely pass through the jack 32 to further enhance the reliability of the connection. In addition, as can be seen from Figure 6 , the jack 32 and the limiting groove 31 intersect. When the single pin 33 penetrates the jack 32, part of the single pin 33 is naturally limited in the limiting groove 31, and this structure can further improve the reliability of the axial limit.

[0043] After installation, the single pin 33 passes through the jack 32 and is simultaneously limited within the limiting groove 31, thereby ensuring that the first pipe joint 12 and the second pipe joint 22 do not undergo relative displacement in the axial direction.

[0044] Refer to Figure 2 , a first sealing ring 4 and a second sealing ring 5 for sealing are provided between the outer wall of the second pipe joint 22 and the inner wall of the first pipe joint 12, and the first sealing ring 4 and the second sealing ring 5 are spaced apart from each other.

[0045] The first sealing ring 4 is located between the end face 220 of the second pipe joint 22 and the limiting groove 31. Compared with the limiting groove 31, the first sealing ring 4 is closer to the end face of the second pipe joint 22, so as to avoid leakage of the medium from the plugging unit.

[0046] A second sealing ring 5 is further provided between the second pipe joint 22 and the first pipe joint 12. The first sealing ring 4 is located on one side of the limiting groove 31; the second sealing ring 5 is located on the other side of the limiting groove 31. The second sealing ring 5 provides a second layer of protection for the seal between the second pipe joint 22 and the first pipe joint 12, further enhancing the sealing effect. In addition, after assembly, the second sealing ring 5 is closer to the end face of the first pipe joint 12. It can balance the extrusion force received by the first sealing ring 4, thereby improving the bending resistance effect of the overall pipeline and providing effective protection for the first sealing ring 4.

[0047] Embodiment Two

[0048] Refer to Figure 7 , the structure of this Embodiment Two is basically the same as that of the above Embodiment One. The main difference is that the boss structure is removed in this embodiment, and the single pin 33 directly passes through the first pipe joint 12 and the second pipe joint 22. As a comparative example, the single pin 33 of this structure is prone to falling off.

[0049] Embodiment Three

[0050] Refer to Figure 8 , the structure of this Embodiment Three is basically the same as that of the above Embodiment One. The main difference is that the jack (not marked in the figure) in this embodiment is a blind hole, and the other end of the single pin 33 does not penetrate the jack.

[0051] Embodiment Four

[0052] Refer to Figure 9 , the structure of this Embodiment Four is basically the same as that of the above Embodiment One. The main difference is that a stepped surface 200' is provided at the junction of the first main pipe 11 and the first pipe joint 12. When the end face 220 of the second pipe joint 22 abuts against the stepped surface 200', the limiting groove 31 is just axially aligned with the jack 32.

[0053] Embodiment Five

[0054] Referring to Figure 10 , the structure of the fifth embodiment is basically the same as that of the first embodiment above. The main difference is that the fifth embodiment has two single pins 33 and two symmetrically arranged jacks (not marked in the figure), and each of the single pins 33 is inserted into the two jacks respectively, which has good structural stability.

[0055] Embodiment Six

[0056] Referring to Figure 11 , the structure of the sixth embodiment is basically the same as that of the first embodiment above. The main difference is that in order to achieve a better sealing effect, two first sealing rings 4 are provided at intervals between the end face 220 of the second pipe joint 22 and the limiting groove 31.

[0057] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A plug-in structure, comprising a first pipe (1) and a second pipe (2). One end of the first pipe (1) forms a first pipe joint (12); one end of the second pipe (2) forms a second pipe joint (22), and the second pipe joint (22) extends into the first pipe joint (12), characterized in that: The plug-in structure further includes a plug-in unit for axially limiting the first pipe joint (12) and the second pipe joint (22). The plug-in unit includes a limit groove (31), a plug hole (32), and a single plug pin (33). The plug hole (32) is formed in the first pipe joint (12) and penetrates the inner wall of the first pipe joint (12). The limit groove (31) is formed in the outer wall of the second pipe joint (22). The single plug pin (33) is inserted through the plug hole (32) and is simultaneously limited within the limit groove (31).

2. The plug-in structure according to claim 1, wherein: At least one first sealing ring (4) for sealing cooperation with the first pipe joint (12) is provided on the second pipe joint (22). The first sealing ring (4) is located between the end face of the second pipe joint (22) and the limit groove (31).

3. The plug-in structure according to claim 2, wherein: A second sealing ring (5) is further provided between the second pipe joint (22) and the first pipe joint (12). The first sealing ring (4) is located on one side of the limit groove (31). The second sealing ring (5) is located on the other side of the limit groove (31).

4. The plug-in structure according to claim 1, characterized in that: The plug hole (32) and the limit groove (31) intersect.

5. The plug-in structure according to claim 1, characterized in that: The first pipe joint (12) includes a main body portion (121) and a convex seat (122) protruding from the main body portion (121). The plug hole (32) is formed in the convex seat (122).

6. The plug-in structure according to claim 5, characterized in that: The convex seat (122) extends along the tangential direction of the first pipe joint (12).

7. The plug-in structure according to claim 5, wherein: The end face (1220) of the convex seat (122) is a plane, and the port of the plug hole (32) is formed in this plane.

8. The plug-in structure according to claim 1, wherein: The limit groove (31) surrounds the outer wall of the second pipe joint (22).

9. The plug-in structure according to claim 8, wherein: The limit groove (31) is perpendicular to the central axis of the second pipe joint (22).

10. The plug-in structure according to claim 1, characterized in that: The plug hole (32) is arranged along the tangential direction of the second pipe joint (22).

11. The plug-in structure according to claim 1, wherein: The plug hole (32) is a through hole or a blind hole.

12. The plug-in structure according to claim 1, wherein: The first pipe (1) further includes a first main pipe (11) connected to the first pipe joint (12). The second pipe (2) further includes a second main pipe (21) connected to the second pipe joint (22). A stepped surface (200) is provided at the junction of the first main pipe (11) and the first pipe joint (12). When the end face (220) of the second pipe joint (22) abuts against the stepped surface (200), the plug hole (32) and the limit groove (31) are axially aligned. Alternatively, a stepped surface (200) is provided at the junction of the second main pipe (21) and the second pipe joint (22). When the end face of the first pipe joint (12) abuts against the stepped surface (200), the plug hole (32) and the limit groove (31) are axially aligned.

13. The plug-in structure according to claim 1, wherein: The single plug pin is in the shape of a straight rod.

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