A quick-fit pipe joint

Abstract

The utility model discloses a kind of quick-mounting pipe joints, it is related to pipeline butt joint technical field, it includes butt joint mechanism and the connecting mechanism connected with pipeline, butt joint mechanism includes butt joint part and quick-mounting assembly, butt joint part includes first butt joint pipe, second butt joint pipe, first butt joint plate and second butt joint plate, the first end of first butt joint pipe is fixedly connected with first butt joint plate, the second end of first butt joint pipe is connected with pipeline;The first end of second butt joint pipe is fixedly connected with second butt joint plate, the second end of second butt joint pipe is connected with connecting mechanism;Quick-mounting assembly includes first clamp ring, second clamp ring, connecting rod and quick-mounting head, first clamp ring is hinged with second clamp ring, first clamp ring is hinged with connecting rod, second clamp ring is provided with clamping plate, quick-mounting head is threadedly connected with connecting rod, and the butt joint clamping of first butt joint pipe and second butt joint pipe is realized by the screwing effect between quick-mounting head and clamping plate.The utility model can improve the sealing effect of quick-mounting pipe joint.

Description

Technical Field

[0001] This utility model relates to the field of pipe connection technology, and in particular to a quick-install pipe joint. Background Technology

[0002] In industrial, building, and civil piping systems, the rapid installation and reliable sealing of pipe fittings have always been key technical requirements. Traditional pipe fittings mostly use threaded connections, flange butt joints, or welding methods. Although the structure is mature, they suffer from problems such as low installation efficiency, inconvenient disassembly, and sealing performance dependent on construction precision. Especially in emergency repairs, temporary pipeline construction, or operations in confined spaces, traditional fittings often cause delays in construction schedules due to their complex operation.

[0003] In recent years, some quick-connect coupling designs have emerged in the market, such as those using clamps, spring clips, or push-in sealing rings to achieve rapid connection. Currently, Chinese utility model patent CN221424178U, published on June 28, 2024, proposes a pipe connector, comprising: a main body with circular through holes at both ends, the two through holes being interconnected; both ends of the main body being connected to a pipe connector through the through holes; an annular locking block fixedly disposed at the end of the connector, the end of the locking block away from the connector being an arc-shaped curved surface; an annular movable block slidably fitted on the outer surface of the connector, both ends of the movable block being arc-shaped curved surfaces; a fixed block fixedly connected to the outer surface of the connector; and a set of locking devices at both ends of the main body, each set of locking devices cooperating with the connector at the same end.

[0004] Regarding the aforementioned technologies, during pipeline connection, if high-pressure media transmission is encountered, leakage may occur between the top block and the main body, and between the clamping block and the main body, due to the sliding range requirements, resulting in poor sealing performance of the connection joint. Utility Model Content

[0005] In order to improve the sealing effect of quick-connect pipe joints, this utility model provides a quick-connect pipe joint.

[0006] This utility model provides a quick-installation pipe joint, which adopts the following technical solution: A quick-connect pipe fitting includes a docking mechanism and a connection mechanism for connecting to a pipe. The docking mechanism includes a docking part and a quick-connect component. The docking part includes a first pair of pipes, a second pair of pipes, a first docking plate, and a second docking plate. A first end of the first pair of pipes is fixedly connected to the first docking plate, and a second end of the first pair of pipes is connected to the pipe. The first end of the second pair of connecting pipes is fixedly connected to the second docking plate, and the second end of the second pair of connecting pipes is connected to the connecting mechanism; The quick-release assembly includes a first clamping ring, a second clamping ring, a connecting rod, and a quick-release head. The first clamping ring is hinged to the second clamping ring and the connecting rod. The second clamping ring is provided with a snap-fit ​​plate. The quick-release head is threadedly connected to the connecting rod. The first and second connecting pipes are clamped together by the tightening action between the quick-release head and the snap-fit ​​plate.

[0007] Optionally, the mating part further includes clamping members, and two clamping members are provided. One clamping member is threadedly connected to the first pair of pipes, and the other clamping member is threadedly connected to the second pair of pipes. The clamping member abuts against the first clamping ring and the second clamping ring.

[0008] Optionally, the docking portion further includes an inclined ring and a ring sleeve. One inclined ring is provided at each end of the first clamping ring, and one inclined ring is provided at each end of the second clamping ring. Two ring sleeves are provided, and each ring sleeve is fixedly connected to one of the clamping members. The inclined ring is inside the ring sleeve.

[0009] Optionally, a sealing ring is provided on both the first docking plate and the second docking plate.

[0010] Optionally, the quick-release assembly further includes an abutment portion, the first end of which is rotatably connected to the quick-release head, and the second end of which abuts against the snap-fit ​​plate.

[0011] Optionally, the quick-release head is provided with a rotating insertion hole.

[0012] Optionally, the connecting mechanism includes a connecting pipe and a plurality of connectors, a first end of the connecting pipe being connected to the second pair of connecting pipes, a second end of the connecting pipe being connected to the connectors, and the plurality of connectors being distributed along the axial direction of the connecting pipe.

[0013] Optionally, the connecting mechanism further includes a locking assembly, which includes a locking bracket, a locking ring, and a locking screw. The first end of the locking bracket is fixedly connected to the second pair of connecting pipes, the second end of the locking bracket is fixedly connected to the locking ring, and the locking screw is rotatably connected to the locking ring.

[0014] Optionally, multiple locking screws are provided along the circumference of the locking ring.

[0015] Optionally, the locking assembly further includes a locking washer, which is fixedly connected to one end of the locking screw near the connecting tube.

[0016] In summary, this utility model has at least one of the following beneficial technical effects: 1. By rotating a quick-release head, the threaded lever principle drives the clamping ring to close rapidly, forcefully clamping the first and second mating plates, thereby completing the pipe connection and sealing. This significantly simplifies the operation process and greatly reduces the time required to tighten multiple bolts one by one in traditional flange connections.

[0017] 2. The inclined ring and ring sleeve of the quick-release assembly guide the movement trajectory of the clamping ring, preventing skewing, improving clamping stability, and changing the sliding friction of the contact part to rotational friction, thereby reducing wear on the clamping plate.

[0018] 3. The locking assembly provides additional radial fastening capability for the core quick-connect fitting, used to lock external pipes or equipment connected to the branch connector of this fitting. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 yes Figure 1 A diagram from another perspective; Figure 3 This is a partial structural schematic diagram of an embodiment of the present utility model; Figure 4 This is a schematic diagram of a partial explosion of this utility model; Figure 5 This is a diagram showing the effect of assembling the utility model with a pipe.

[0020] Explanation of reference numerals in the attached drawings: 100, docking mechanism; 110, docking part; 111, first connecting pipe; 112, second connecting pipe; 113, first docking plate; 114, second docking plate; 115, clamping element; 116, inclined ring; 117, ring sleeve; 120, sealing ring; 130, quick-release assembly; 131, first clamping ring; 132, second clamping ring; 133, connecting rod; 134, quick-release head; 135, abutment part; 136, rotating insertion hole; 137, snap-fit ​​plate; 200, connecting mechanism; 210, connecting pipe; 220, connector; 230, locking assembly; 231, locking ring; 232, locking bracket; 233, locking screw; 234, locking washer; 300, pipe. Detailed Implementation

[0021] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] This utility model discloses a quick-connect pipe fitting. (See attached diagram.) Figure 1 To be continued Figure 5 A quick-connect pipe joint mainly includes a docking mechanism 100 and a connecting mechanism 200 that connects to a pipe 300. The pipe 300 can be composed of two pipes to be docked. The pipe 300 is only used in this scenario. The pipe 300 can be one of various conveying pipes, such as rigid pipe, flexible pipe, square pipe, round pipe, or special-shaped pipe. No further limitation is made here. The docking mechanism 100 includes a docking part 110 and a quick-connect component 130. The docking part 110 includes a first pair of connecting pipes 111 and a second pair of connecting pipes 112. 12. A first mating plate 113 and a second mating plate 114; the first end of the first connecting pipe 111 is fixedly connected to the first mating plate 113; the second end of the first connecting pipe 111 is connected to a section of pipe 300, which can be a flexible or rigid pipe, and is directly fixed to the first connecting pipe 111 beforehand by clamps or welded together. This section of pipe 300, the first connecting pipe 111, and the first mating plate 113 together form the first mating part; the other end of the pipe 300 can be a flexible or rigid pipe. The pipe section 300, the second connecting pipe 112, and the second docking plate 114 are pre-fixed or welded together with the connecting mechanism 200. Together, they form the second docking section. The first end of the second connecting pipe 112 is fixedly connected to the second docking plate 114, and the second end of the second connecting pipe 112 is connected to the connecting mechanism 200. The quick-connect assembly 130 includes a first clamping ring 131, a second clamping ring 132, a connecting rod 133, and a quick-connect head 134. One end of the first clamping ring 131 is hinged to one end of the second clamping ring 132. The other end of the first clamping ring 131 is hinged to one end of the connecting rod 133. The other end of the second clamping ring 132 is provided with a snap-fit ​​plate 137. The quick-connect head 134 is threadedly connected to the other end of the connecting rod 133. The first docking plate 113 and the second docking plate 114 are clamped together by the tightening action between the quick-connect head 134 and the snap-fit ​​plate 137, thereby realizing the quick docking of the first part to be docked and the second part to be docked. At the same time, the first docking plate 113 and the second docking plate 114 have a good sealing effect.

[0024] By rotating a quick-connect head 134, the connecting rod 133 is driven, and the lever action of the threaded connection causes the first clamping ring 131 and the second clamping ring 132 to close quickly, achieving a strong clamping of the first mating plate 113 and the second mating plate 114, thus completing the quick-connect sealing of the two pipes 300. For disassembly, rotating the quick-connect head 134 in the opposite direction releases the clamping rings. This significantly reduces the tedious operation and time required for traditional flange connections, which necessitates tightening multiple bolts one by one. The quick-connect head 134 is threadedly connected to the connecting rod 133 and generates a strong axial tensile force through its tightening action with the clamping plate 137. This force is ultimately converted into a radial clamping force of the first clamping ring 131 and the second clamping ring 132 on the first mating plate 113 and the second mating plate 114, ensuring a firm connection and reliable sealing.

[0025] See attached document Figure 1 and attached Figure 3 In some embodiments, the mating portion 110 further includes clamping members 115. Two clamping members 115 are provided, one threadedly connected to the first mating tube 111 and the other threadedly connected to the second mating tube 112. The clamping members 115 abut against the first clamping ring 131 and the second clamping ring 132. The clamping members 115 (such as nuts or adjusting rings) are threaded onto the mating tube. Their function is to abut against the first clamping ring 131 and the second clamping ring 132. The clamping members 115 define the axial position of the clamping rings in the mating tube, ensuring that the clamping rings can accurately act on the areas requiring clamping (the mating plate area). When the quick-release assembly 130 applies clamping force, the clamping members 115 act as a fulcrum or transmission point of force, more effectively transmitting the force of the clamping rings to the first mating tube 111, the second mating tube 112, the first mating plate 113, and the second mating plate 114. The initial clamping state can be fine-tuned or wear compensated by adjusting the position of the clamping members 115.

[0026] See attached document Figure 1 and attached Figure 2 In some embodiments, the docking portion 110 further includes an inclined ring 116 and a ring sleeve 117. An inclined ring 116 is provided at each end of the first clamping ring 131, and an inclined ring 116 is provided at each end of the second clamping ring 132. Two ring sleeves 117 are provided, each ring sleeve 117 being fixedly connected to a clamping member 115. The inclined rings 116 are located within the ring sleeves 117. The inclined rings 116 are located at both ends of the clamping rings (one at each end of the first clamping ring 131, and one at each end of the second clamping ring 132) and are situated within the ring sleeves 117 fixed to the clamping members 115. This forms a guiding mechanism; the sliding of the inclined rings 116 within the ring sleeves 117 guides the clamping rings to move along a predetermined trajectory during opening and closing, preventing skewing or jamming. The ring sleeves 117 restrict the radial movement of the inclined rings 116 (thus restricting the clamping rings), ensuring that the clamping rings are correctly positioned and aligned with the docking plate during clamping, improving the stability and reliability of the clamping.

[0027] See attached document Figure 3 and attached Figure 4 In some embodiments, a sealing ring 120 is provided on the opposite end faces of the first mating plate 113 and the second mating plate 114. The sealing ring 120 is disposed on the contact surface (or in the corresponding sealing groove) of the first mating plate 113 and the second mating plate 114. When the clamping ring applies a clamping force to press the two mating plates together, the sealing ring 120 undergoes elastic deformation, filling the microscopic unevenness of the contact surface and forming a reliable static seal.

[0028] See attached document Figure 1 In some embodiments, the quick-release assembly further includes an abutment portion 135, the first end of which is rotatably connected to the quick-release head 134, and the second end of which abuts against the locking plate 137. When the quick-release head 134 is rotated, the abutment portion 135 rotates relative to the locking plate 137 (or can be considered as a low-friction abutment), avoiding direct hard friction (sliding friction) between the threaded end of the quick-release head 134 and the locking plate 137. This greatly reduces wear on the contact surface of the locking plate 137 and extends its service life.

[0029] See attached document Figure 1 In some embodiments, the quick-release head 134 has a rotating insertion hole 136. The rotating insertion hole 136 allows the user to insert a lever tool (such as a wrench, pry bar, special handle, etc.). By lengthening the lever arm, more torque can be generated with less manual force to rotate the quick-release head 134, especially when high clamping force is required or the quick-release head 134 is tight, making operation more effortless. When space is limited or when rapid and forceful operation is required, using a tool is more convenient, efficient, and reliable than turning by hand.

[0030] See attached document Figure 1 In some embodiments, the connecting mechanism 200 includes a connecting pipe 210 and a plurality of connectors 220. A first end of the connecting pipe 210 is connected to a second connecting pipe 112, and a second end of the connecting pipe 210 is connected to a connector 220. The plurality of connectors 220 are distributed along the axial direction of the connecting pipe 210. When the flexible pipe 300 is connected, the flexible pipe 300 is fitted onto the connector 220. The radius of each connector 220 gradually decreases from its bottom to its top, thus fixing the flexible pipe 300 and improving the stability of the connection.

[0031] See attached document Figure 1In some embodiments, the connecting mechanism 200 further includes a locking assembly 230, which includes a locking bracket 232, a locking ring 231, and a locking screw 233. The first end of the locking bracket 232 is fixedly connected to the second connecting pipe 112, and the second end of the locking bracket 232 is fixedly connected to the locking ring 231. The locking screw 233 is rotatably connected to the locking ring 231. The locking ring 231 and the locking screw 233 are used to lock the external pipe 300 connected to the connecting pipe 210 (or connector 220). The quick-connect assembly 130 mainly completes the axial clamping of the two connector bodies, while the locking assembly 230 is used to fasten other pipe fittings connected to the connector branch (connecting pipe 210 / connector 220). The locking bracket 232 provides support, the locking ring 231 provides a force application surface, and the locking screw 233 provides radial clamping force (similar to the function of a clamp or flange bolt), enhancing the stability of the connection points of the entire Pipeline 300 system.

[0032] See attached document Figure 1 In some embodiments, multiple locking screws 233 are provided circumferentially along the locking ring 231. The multiple circumferentially distributed locking screws 233 ensure that the radial pressure applied to the external connecting pipe 210 (the pipe 300 or hose fitted onto the connecting pipe 210 / connector 220) is uniform, providing a more reliable and secure connection.

[0033] See attached document Figure 1 In some embodiments, the locking assembly 230 further includes a locking washer 234, which is fixedly connected to the end of the locking screw 233 near the connecting tube 210. The locking washer 234 is typically made of a material that is softer and has a higher coefficient of friction than the metal screw (such as rubber, nylon, or toothed metal washer), providing greater friction and effectively preventing the locking screw 233 from loosening under conditions such as vibration.

[0034] The implementation principle of a quick-connect pipe joint according to this utility model embodiment is as follows: The quick-connect assembly 130, connecting rod 133, threaded quick-connect head 134, and snap-fit ​​plate 137 drive the clamping ring to close quickly through the threaded lever action generated by rotating the single quick-connect head 134, achieving a powerful clamping connection of the pipe 300, significantly simplifying the installation and disassembly process and greatly improving efficiency; the clamping element 115 positions and transmits force, the inclined ring 116 and the ring sleeve 117 guide stable movement, the sealing ring 120 ensures sealing, the abutment part 135 reduces wear, and the quick-connect head 134 insertion hole facilitates the application of force.

[0035] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A quick-connect pipe fitting, characterized in that: It includes a docking mechanism (100) and a connection mechanism (200) connected to a pipe (300). The docking mechanism (100) includes a docking part (110) and a quick-installation assembly (130). The docking part (110) includes a first connecting pipe (111), a second connecting pipe (112), a first docking plate (113), and a second docking plate (114). The first end of the first connecting pipe (111) is fixedly connected to the first docking plate (113), and the second end of the first connecting pipe (111) is connected to the pipe (300). The first end of the second pair of connecting pipes (112) is fixedly connected to the second docking plate (114), and the second end of the second pair of connecting pipes (112) is connected to the connecting mechanism (200); The quick-release assembly (130) includes a first clamping ring (131), a second clamping ring (132), a connecting rod (133), and a quick-release head (134). The first clamping ring (131) is hinged to the second clamping ring (132), and the first clamping ring (131) is hinged to the connecting rod (133). The second clamping ring (132) is provided with a snap-fit ​​plate (137). The quick-release head (134) is threadedly connected to the connecting rod (133). The first connecting tube (111) and the second connecting tube (112) are clamped together by the tightening action between the quick-release head (134) and the snap-fit ​​plate (137).

2. The quick-connect pipe fitting according to claim 1, characterized in that: The docking part (110) further includes a clamping member (115), and there are two clamping members (115). One clamping member (115) is threadedly connected to the first connecting pipe (111), and the other clamping member (115) is threadedly connected to the second connecting pipe (112). The clamping member (115) abuts against the first clamping ring (131) and the second clamping ring (132).

3. The quick-connect pipe fitting according to claim 2, characterized in that: The docking part (110) further includes a slanted ring (116) and a ring sleeve (117). One slanted ring (116) is provided at each end of the first clamping ring (131), and one slanted ring (116) is provided at each end of the second clamping ring (132). Two ring sleeves (117) are provided, and each ring sleeve (117) is fixedly connected to one of the clamping members (115). The slanted ring (116) is inside the ring sleeve (117).

4. The quick-connect pipe fitting according to claim 1, characterized in that: A sealing ring (120) is provided on the first docking plate (113) and the second docking plate (114).

5. The quick-connect pipe fitting according to any one of claims 1-4, characterized in that: The quick-release assembly (130) further includes an abutment portion (135), the first end of which is rotatably connected to the quick-release head (134), and the second end of which abuts against the snap-fit ​​plate (137).

6. The quick-connect pipe fitting according to claim 5, characterized in that: The quick-release head (134) is provided with a rotating insertion hole (136).

7. The quick-connect pipe fitting according to any one of claims 1-4, characterized in that: The connecting mechanism (200) includes a connecting pipe (210) and a plurality of connectors (220). The first end of the connecting pipe (210) is connected to the second connecting pipe (112), and the second end of the connecting pipe (210) is connected to the connectors (220). The plurality of connectors (220) are distributed along the axial direction of the connecting pipe (210).

8. The quick-connect pipe fitting according to claim 7, characterized in that: The connecting mechanism (200) further includes a locking assembly (230), which includes a locking bracket (232), a locking ring (231), and a locking screw (233). The first end of the locking bracket (232) is fixedly connected to the second pair of connecting pipes (112), the second end of the locking bracket (232) is fixedly connected to the locking ring (231), and the locking screw (233) is rotatably connected to the locking ring (231).

9. The quick-connect pipe fitting according to claim 8, characterized in that: Multiple locking screws (233) are provided along the circumference of the locking ring (231).

10. The quick-connect pipe fitting according to claim 8, characterized in that: The locking assembly (230) also includes a locking pad (234), which is fixedly connected to one end of the locking screw (233) near the connecting tube (210).

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