Quick connector assembly

Abstract

The utility model belongs to the technical field of pipeline connection, and particularly relates to a quick connector assembly which comprises a pipeline connecting joint sleeve to be clamped and two pipeline connectors, the pipeline connecting joint sleeve is movably connected to the adjacent end faces of the two pipeline connectors in a sleeved mode, and a first clamping ring and a second clamping ring are arranged on the outer surface of the pipeline connecting joint sleeve in an up-down distribution mode. A pressing mechanism is arranged between the first clamping ring and the second clamping ring and comprises a single bolt, and the distance between the first clamping ring and the second clamping ring is adjusted through the single bolt, so that the first clamping ring and the second clamping ring tightly hold the pipeline connecting joint sleeve. According to the quick connector assembly, in the installation process, the initial gap is formed between the gasket and the pipeline connector, the gap is used for ensuring that the gasket can be fully compressed when the first clamping ring and the second clamping ring are connected in a sealed mode so that a good sealing effect can be achieved, and the gasket can be replaced when the gap is smaller than the use requirement or no gap exists, so that high sealing performance is ensured.

Description

Technical Field

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

[0002] A self-tightening flange hard seal is a sealing structure used for pipeline connections, widely applied in high-temperature, high-pressure, and leak-prone environments. This structure achieves its sealing effect through the compression of the flange connection, making it particularly suitable for applications requiring high sealing performance. In a self-tightening flange hard seal, the flange sealing surface is typically made of a rigid material capable of withstanding higher operating pressures and temperatures. Its main principle is that during the flange connection process, the tightening of bolts creates a self-tightening effect between the flange and the sealing surface, thereby maintaining sealing performance.

[0003] However, self-tightening flanges generally use multiple sets of bolts and nuts to seal the pipe connection. This structure is not only cumbersome to operate, but also causes the nuts to vibrate due to pipe vibration, which reduces the sealing effect. Chinese patent with authorization announcement number CN206637147U discloses a quick-connect clamp for pipes. The first clamping ring can close relative to the second clamping ring and together with the inner side of the connecting arm to form a locking hole for clamping the pipe connecting sleeve. The head of the screw is rotatably connected to the other end of the first clamping ring. The other end of the second clamping ring has a clamping groove for the threaded post of the screw to pass through. The nut is threadedly connected to the threaded post on the outside of the second clamping ring and locks the clamp connection.

[0004] However, in actual pipe connections, sealing gaskets are installed at the two pipe joints to improve sealing. During long-term use, the gaskets are affected by pressure, temperature and medium, and undergo a certain degree of deformation, compression or wear. This results in the gap between the gasket and the pipe joint being smaller than the usage requirements or no gap. If there is no gap or the gap is too small, the gasket loses its elasticity or undergoes permanent deformation, which may lead to sealing failure and leakage. After long-term use, the present invention solves the above-mentioned technical problems. Utility Model Content

[0005] Based on the aforementioned technical problems, this utility model proposes a quick connector assembly.

[0006] This utility model proposes a quick coupling assembly, including a pipe connection sleeve to be clamped and two pipe joints. The pipe connection sleeve is movably sleeved on the adjacent end faces of the two pipe joints. The outer surface of the pipe connection sleeve is provided with a first clamping ring and a second clamping ring distributed vertically. A clamping mechanism is provided between the first clamping ring and the second clamping ring. The clamping mechanism includes a single bolt, which adjusts the distance between the first clamping ring and the second clamping ring, thereby causing the first clamping ring and the second clamping ring to clamp the pipe connection sleeve.

[0007] Preferably, the clamping mechanism further includes clamping grooves formed on the inner surfaces of the first clamping ring and the second clamping ring, the inner wall of the clamping grooves being slidably engaged with the outer surface of the pipe connecting sleeve, and an arc-shaped connecting arm being hinged to the same side of the first clamping ring and the second clamping ring via a pin.

[0008] Through the above technical solution, the existing pipe connection sleeve is positioned and placed on the ports of the two pipe joints. Then, the first clamping ring and the second clamping ring are clamped on the outer periphery of the pipe connection sleeve. In order to achieve the positioning and clamping of the first clamping ring and the second clamping ring without slipping, the outer surface of the pipe connection sleeve is clamped and tightened through the clamping groove for limiting. In order to achieve the connection of the first clamping ring and the second clamping ring, the first clamping ring and the second clamping ring are relatively closed and together with the inner side of the connecting arm form a locking hole for clamping the pipe connection sleeve. At the same time, the movable connecting arm can adaptively adjust the first clamping ring and the second clamping ring.

[0009] Preferably, the clamping mechanism further includes a mounting ear plate fixedly connected to the free end face of the second clamping ring, the single bolt being hinged to the surface of the mounting ear plate via another pin, and a connecting block being fixedly connected to the free end face of the first clamping ring, the upper surface of the connecting block being provided with a locking groove.

[0010] Through the above technical solution, in order to achieve the action of the first clamping ring and the second clamping ring pressing the pipe connecting sleeve, the single bolt hinged to the mounting ear plate surface by the pin can be rotated, so that the single bolt can be inserted into and pass through the locking groove by rotation, thereby realizing the connection of the free ends of the first clamping ring and the second clamping ring. In addition, the general self-tightening flange adopts a four-bolt structure, which makes its installation process cumbersome. The connection with a single bolt is not only more convenient to use, but also makes it easier to adjust the clamping state.

[0011] Preferably, the clamping mechanism further includes a locking block movably sleeved on the outer surface of the single bolt, the upper surface of the connecting block having a concave surface, and the lower surface of the locking block having an arc-shaped convex surface that slides in contact with the surface of the concave surface.

[0012] To prevent the first and second clamping rings from loosening after being locked, the single bolt is rotated, inserted into and passed through the locking groove, and the locking block is fitted onto the outer surface of the single bolt. The arc-shaped convex surface is pressed downward and pressed against the concave surface, thereby strengthening the locking effect of the first and second clamping rings.

[0013] Preferably, the clamping mechanism further includes a long lug washer that is horizontally and movably sleeved on the outer surface of the single bolt. The long lug washer is bent, and the lower surface of the long lug washer slides in contact with the upper surface of the locking block. A nut is threaded onto the outer surface of the single bolt, and the lower surface of the nut slides in contact with the upper surface of the long lug washer. The lug plate of the long lug washer is bent after the nut is tightened, so that the surface of the lug plate fits against the surface of the nut.

[0014] The above technical solution involves locking the single bolt by rotating the nut to press it against the locking block. To prevent the nut from loosening due to vibration in the pipeline system during use, the horizontal ear plate of the long ear washer is bent after the nut is tightened on the surface of the single bolt. This bending process enhances the clamping effect on the nut by making the surface of the long ear washer fit against the nut. This ensures that the two sides of the long ear washer can make close contact when the nut rotates, forming a fixed structure. This bending design not only provides additional friction but also prevents the nut from rotating relative to the single bolt due to vibration or external force, thus preventing loosening.

[0015] Preferably, the clamping mechanism further includes a gasket that slides in contact with the opposite surfaces of the two pipe fittings. The gasket is made of a high-temperature nickel-based alloy and its surface is coated with a MoS2 coating or a PTFE coating.

[0016] Through the above technical solution, the gasket's function is to seal the pipe joint and prevent fluid leakage. In this design, the gasket is made of high-temperature nickel-based alloy and coated with MoS2 or PTFE coating. This ensures that the clamping mechanism can provide sufficient clamping force under high temperature and high pressure environments, so that the gasket and the joint surface are in close contact, thereby ensuring a leak-proof seal. Furthermore, due to the sliding contact and the use of coating, the coefficient of friction is significantly reduced, which helps to reduce friction and wear between the gasket and the joint surface and extend the service life of the equipment.

[0017] Preferably, there is a gap between the contact surfaces of the pipe joint and the gasket.

[0018] With the above technical solution, there will be a certain initial gap between the gasket and the pipe joint during installation. This gap is to ensure that the gasket can be fully compressed when the first clamping ring and the second clamping ring are sealed together to achieve a good sealing effect. If the compression is excessive or the gap is too small, the gasket may break or fail to form an effective seal. After long-term use, the gasket may deform or wear, resulting in a gap smaller than the usage requirements or no gap, which requires replacement. This avoids sealing failure caused by a gap that is too large or too small. Under normal circumstances, the gap is between 0.1mm and 0.5mm to allow for slight deformation and adaptation of the gasket.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1. By setting up a clamping mechanism, loosening of pipe joint connections can be avoided, and the steps involved in connecting pipe joints can be reduced. During the adjustment process, the single bolt can be turned to pass through the locking groove and then locked with a nut, which is convenient to operate and use. At the same time, since the number of bolts that need to be operated in the locking step is reduced, the risk of nut loosening is reduced to a certain extent, the locking degree of the clamp is improved, and the long ear washer is used to lock the nut to prevent it from loosening, thereby enhancing the sealing performance of the connection between pipes.

[0021] 2. By setting a gap between the gasket and the pipe joint, the sealing performance between the pipe joints can be improved. During the adjustment process, an initial gap is set between the gasket and the pipe joint during installation. This gap is to ensure that the gasket can be fully compressed when the first clamping ring and the second clamping ring are sealed together to achieve a good sealing effect. When the gap is less than the usage requirements or there is no gap, the gasket is replaced, thereby ensuring high sealing performance. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a quick connector assembly proposed in this utility model;

[0023] Figure 2 A perspective view of the long lug gasket structure of a quick connector assembly proposed in this utility model before bending;

[0024] Figure 3 This is a perspective view of the clamping groove structure of a quick connector assembly proposed in this utility model;

[0025] Figure 4 This is a perspective view of a pipe connection sleeve structure of a quick coupling assembly proposed in this utility model;

[0026] Figure 5 A perspective view of a single bolt structure of a quick connector assembly proposed in this utility model;

[0027] Figure 6This is a perspective view of a pipe joint structure for a quick coupling assembly proposed in this utility model;

[0028] Figure 7 This is a front view of the gasket structure of a quick connector assembly proposed in this utility model.

[0029] In the diagram: 1. Pipe connection sleeve; 2. Pipe joint; 3. First clamping ring; 4. Second clamping ring; 5. Single bolt; 6. Clamping groove; 7. Connecting arm; 8. Mounting ear plate; 9. Connecting block; 10. Locking groove; 11. Locking block; 12. Concave surface; 13. Long ear washer; 14. Nut; 15. Washer. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] Reference Figures 1-7 A quick coupling assembly includes a pipe connection sleeve 1 to be clamped and two pipe joints 2. The pipe connection sleeve 1 is movably sleeved on the adjacent end faces of the two pipe joints 2. The outer surface of the pipe connection sleeve 1 is provided with a first clamping ring 3 and a second clamping ring 4 distributed vertically. A clamping mechanism is provided between the first clamping ring 3 and the second clamping ring 4. The clamping mechanism includes a single bolt 5. The single bolt 5 adjusts the distance between the first clamping ring 3 and the second clamping ring 4, thereby making the first clamping ring 3 and the second clamping ring 4 clamp the pipe connection sleeve 1 tightly.

[0032] The existing pipe connector sleeve 1 is positioned and fitted onto the ports of the two pipe joints 2. Then, the first clamping ring 3 and the second clamping ring 4 are clamped on the outer periphery of the pipe connector sleeve 1. In order to achieve the positioning and clamping of the first clamping ring 3 and the second clamping ring 4 without slipping, and to achieve the connection of the first clamping ring 3 and the second clamping ring 4, the clamping mechanism also includes clamping grooves 6 formed on the inner surfaces of the first clamping ring 3 and the second clamping ring 4. The inner wall of the clamping groove 6 is slidably engaged with the outer surface of the pipe connector sleeve 1. The same side of the first clamping ring 3 and the second clamping ring 4 is hinged with an arc-shaped connecting arm 7 by a pin. The clamping groove 6 clamps and holds the outer surface of the pipe connector sleeve 1 tightly for limiting. The first clamping ring 3 and the second clamping ring 4 are relatively closed and together with the inner side of the connecting arm 7 form a locking hole for clamping the pipe connector sleeve 1. At the same time, the movable connecting arm 7 can adaptively adjust the first clamping ring 3 and the second clamping ring 4.

[0033] To achieve the action of the first clamping ring 3 and the second clamping ring 4 pressing the pipe connecting sleeve 1, the pressing mechanism also includes a mounting ear plate 8 fixedly connected to the free end face of the second clamping ring 4. A single bolt 5 is hinged to the surface of the mounting ear plate 8 through another pin. A connecting block 9 is fixedly connected to the free end face of the first clamping ring 3. A locking groove 10 is opened through the upper surface of the connecting block 9. The single bolt 5, which is hinged to the surface of the mounting ear plate 8 through the pin, can rotate, so that the single bolt 5 can be inserted into and pass through the locking groove 10 by rotation, thereby realizing the connection between the free ends of the first clamping ring 3 and the second clamping ring 4. In addition, the general self-tightening flange adopts a four-bolt structure, which makes its installation process cumbersome. The connection with a single bolt 5 is not only more convenient to use, but also makes it easier to adjust the clamping state.

[0034] To prevent the first clamping ring 3 and the second clamping ring 4 from loosening after being locked at their free ends, the clamping mechanism also includes a locking block 11 that is movably sleeved on the outer surface of the single bolt 5. The upper surface of the connecting block 9 has a concave surface 12, and the lower surface of the locking block 11 has an arc-shaped convex surface that slides in contact with the surface of the concave surface 12. After the single bolt 5 is rotated and inserted into and passes through the locking groove 10, the locking block 11 is sleeved on the outer surface of the single bolt 5, and its arc-shaped convex surface is pressed down and pressed against the concave surface 12, thereby strengthening the locking effect of the first clamping ring 3 and the second clamping ring 4.

[0035] To tighten the single bolt 5 and prevent the nut 14 from loosening due to vibration in the piping system during use, the tightening mechanism also includes a long lug washer 13 that is horizontally and movably sleeved on the outer surface of the single bolt 5. The lower surface of the long lug washer 13 slides in contact with the upper surface of the locking block 11. The nut 14 is threaded onto the outer surface of the single bolt 5, and the lower surface of the nut 14 slides in contact with the upper surface of the long lug washer 13. The lug plate of the long lug washer 13 is bent after the nut 14 is tightened, so that the surface of the lug plate fits against the surface of the nut 14. The nut 14 rotates, pressing against the locking block 11 to lock the single bolt 5. After the nut 14 is tightened onto the surface of the single bolt 5, the horizontal ear plate of the long ear washer 13 is bent so that its surface fits against the nut 14, enhancing its clamping effect on the nut 14. This allows the two sides of the long ear washer 13 to make close contact when the nut 14 rotates, forming a fixed structure. This bending design not only provides additional friction but also prevents the nut 14 from rotating relative to the single bolt 5 due to vibration or external force, thus preventing loosening.

[0036] By setting up a clamping mechanism, loosening of the pipe joint 2 connection can be avoided, and the steps of connecting the pipe joint 2 can be reduced. During the adjustment process, the single bolt 5 can be rotated to pass through the locking groove 10 and then locked with the nut 14, which is convenient to operate and use. At the same time, since the number of screws that need to be operated in the locking step is reduced, the risk of the nut 14 loosening is reduced to a certain extent, the locking degree of the clamp is improved, and the long ear washer 13 is used to lock the nut 14 to prevent it from loosening, thereby enhancing the sealing of the connection between pipes.

[0037] The clamping mechanism also includes a gasket 15 that slides in contact with the opposite surfaces of the two pipe joints 2. The gasket 15 is made of a high-temperature nickel-based alloy and its surface is coated with a MoS2 coating or a PTFE coating. The function of the gasket 15 is to achieve a seal on the pipe joint 2 and prevent fluid leakage. In this design, the gasket 15 is made of a high-temperature nickel-based alloy and coated with a MoS2 or PTFE coating, which can ensure that the clamping mechanism can provide sufficient clamping force under high temperature and high pressure environments, so that the gasket 15 is in close contact with the joint surface, thereby ensuring a leak-proof seal. Furthermore, due to the use of sliding contact and coating, the coefficient of friction is significantly reduced, which helps to reduce friction and wear between the gasket 15 and the joint surface and extend the service life of the equipment.

[0038] There is a gap between the contact surfaces of pipe joint 2 and gasket 15 (e.g.) Figure 7 As shown in the diagram, during installation, there will be an initial gap between the gasket 15 and the pipe joint 2. This gap is to ensure that the gasket 15 can be fully compressed when the first clamping ring 3 and the second clamping ring 4 are sealed together to achieve a good sealing effect. If the compression is excessive or the gap is too small, the gasket 15 may break or fail to form a seal effectively. After long-term use, the gasket 15 may deform or wear, resulting in a gap smaller than the usage requirements or no gap. In this case, it needs to be replaced to avoid sealing failure caused by a gap that is too large or too small. Under normal circumstances, the gap is between 0.1mm and 0.5mm to allow for slight deformation and adaptation of the gasket 15.

[0039] By setting a gap between the gasket 15 and the pipe joint 2, the sealing performance between the pipe joint 2 can be improved. During the adjustment process, an initial gap is set between the gasket 15 and the pipe joint 2 during the installation process. This gap is to ensure that the gasket 15 can be fully compressed when the first clamping ring 3 and the second clamping ring 4 are sealed together to achieve a good sealing effect. The gasket 15 is replaced when the gap is smaller than the usage requirements or there is no gap, thereby ensuring high sealing performance.

[0040] Working principle: In a specific embodiment of this utility model, the gasket 15 is placed between two pipe joints 2 with a certain gap, and then the existing pipe connection sleeve 1 is positioned and placed on the ports of the two pipe joints 2. Then, the first clamping ring 3 and the second clamping ring 4 are clamped on the outer periphery of the pipe connection sleeve 1, so that the clamping groove 6 clamps and holds the outer surface of the pipe connection sleeve 1 tightly.

[0041] The next step is to rotate the single bolt 5, which is hinged to the ear plate 8 via a pin, so that the single bolt 5 is inserted and passes through the locking groove 10. Then, the locking block 11 is fitted onto the outer surface of the single bolt 5, and its arc-shaped convex surface is pressed down and pressed against the concave surface 12. Next, the long ear washer 13 is inserted, and the nut 14 is rotated to press it against the locking block 11, thereby locking the single bolt 5. At this time, the first clamping ring 3 and the second clamping ring 4 perform a clamping action, and the washer 15 is fully compressed during the sealing connection to achieve a good sealing effect. After the nut 14 is fitted onto the surface of the single bolt 5 and tightened, the horizontal ear plate of the long ear washer 13 is bent so that its surface is attached to the nut 14 to enhance its clamping effect on the nut 14. This allows the two sides of the long ear washer 13 to make close contact when the nut 14 rotates, forming a fixed structure.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A quick coupling assembly, comprising a pipe joint sleeve (1) to be clamped and two pipe couplings (2), the pipe joint sleeve (1) movably sleeving the adjacent end faces of the two pipe couplings (2), and the outer surface of the pipe joint sleeve (1) is provided with a first clamping ring (3) and a second clamping ring (4) arranged in an up-down distribution, characterized in that: The first clamping ring (3) and the second clamping ring (4) are provided with a compression mechanism, the compression mechanism comprises a single bolt (5), the single bolt (5) adjusts the spacing between the first clamping ring (3) and the second clamping ring (4), so that the first clamping ring (3) and the second clamping ring (4) tightly hold the pipe joint sleeve (1).

2. A quick connector assembly according to claim 1, wherein: The compression mechanism further comprises a clamping groove (6) opened in the inner surface of the first clamping ring (3) and the second clamping ring (4), the inner wall of the clamping groove (6) is in sliding connection with the outer surface of the pipe joint sleeve (1), and the same side of the first clamping ring (3) and the second clamping ring (4) is hingedly connected with an arc-shaped connecting arm (7) through a pin shaft.

3. A quick union fitting assembly according to claim 2, wherein: The compression mechanism further comprises a mounting lug plate (8) fixedly connected to the free end surface of the second clamping ring (4), the single bolt (5) is hingedly connected to the surface of the mounting lug plate (8) through another pin shaft, and the free end surface of the first clamping ring (3) is fixedly connected with a connecting block (9), and the upper surface of the connecting block (9) is provided with a locking groove (10).

4. A quick union fitting assembly according to claim 3, wherein: The compression mechanism further comprises a locking block (11) movably sleeved on the outer surface of the single bolt (5), the upper surface of the connecting block (9) is provided with a concave surface (12), and the lower surface of the locking block (11) is in the form of an arc-shaped convex surface and is in sliding contact with the surface of the concave surface (12).

5. A quick union fitting assembly according to claim 4, wherein: The compression mechanism further comprises a long lug gasket (13) movably sleeved on the outer surface of the single bolt (5) in a horizontal manner, the lower surface of the long lug gasket (13) is in sliding contact with the upper surface of the locking block (11), the outer surface of the single bolt (5) is threadedly sleeved with a nut (14), the lower surface of the nut (14) is in sliding contact with the upper surface of the long lug gasket (13), and the lug plate of the long lug gasket (13) is bent after the nut (14) is tightened, and the surface of the lug plate is attached to the surface of the nut (14).

6. A quick union coupling assembly according to claim 5, wherein: The compression mechanism further comprises a gasket (15) in sliding contact with the opposite side surface of the two pipe joints (2), the gasket (15) is made of high-temperature nickel-based alloy, and the surface thereof is coated with a MoS2 coating or a PTFE coating.

7. A quick union coupling assembly according to claim 6, wherein: There is a gap between the contact surfaces of the two pipe joints (2) and the gasket (15).

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