Plastic pipe high-pressure quick connector

Abstract

The invention relates to a plastic pipe high-pressure quick connector which comprises an outer fixing pipe used for providing external support, an inner connecting mechanism used for conducting matched sealing on an inner water pipe and a locking mechanism used for providing anti-loosening and locking for the inner connecting mechanism, and the two ends of the inner side of the outer fixing pipe correspond to the two water pipes correspondingly. The inner connecting mechanism is installed on the inner side of the outer fixing pipe and located at the position of an opening of the water pipe, the locking mechanism is located on the outer side of the inner connecting mechanism, and a conical ring part of a sealing rubber ring on the inner connecting mechanism is arranged at the step position of the inner side of the outer fixing pipe and the opening of the water pipe. A plurality of guide blocks are arranged on the inner side face of the conical ring in a circumferential array mode, and the technical problem that in an existing high-pressure plastic pipe connecting mode, vortex is caused by high-pressure water and steps at a connector, connector oscillation is caused, and loosening and water leakage are caused is solved.

Description

Technical Field

[0001] The invention relates to the field of connectors, and in particular to a plastic pipe high-pressure quick connector. Background Art

[0002] Plastic pipe high pressure quick connector is a quick sealing device designed for high pressure fluid transmission. It is usually made of plastic or composite materials and can quickly connect and disconnect pipes through buckles, claws or flexure structures. Its core function is to ensure sealing, pressure resistance and easy operation under high pressure environment.

[0003] In the prior art, a Chinese invention with publication number CN117212585A discloses a plastic pipe high-pressure quick connector, which cooperates with the pipeline through a connecting block. However, in the actual plastic pipe transmission field and operation process, the high-pressure water flow is generally accompanied by frequent starts and stops and pulses, and the steps at the interface will cause vortices due to the frequent pulses of the high-pressure water flow. When the subsequent water flow impacts the vortex, oscillation will occur. In a continuous high-frequency oscillation environment, there is a risk of leakage. In order to ensure the cross-SU connection using a docking connector, there is a movable gap at both ends. Although the liquid pressure transmitted by the plastic pipe is limited to within 2.5MPa, the formation of vortices at the internal interface, continuous oscillation, water hammer and other reasons can also cause the connector to deflect. Summary of the invention

[0004] The invention provides a plastic pipe high-pressure quick connector to solve the technical problem that in the current high-pressure plastic pipe connection method, the interface is subjected to vortexes caused by high-pressure water and steps, which causes the connector to vibrate and thus cause loosening and water leakage.

[0005] A plastic pipe high-pressure quick connector of the present invention adopts the following technical solution: it comprises an external fixed pipe for providing external support, an internal connection mechanism for cooperating and sealing the internal water pipe, and a locking mechanism for providing anti-loosening and locking for the internal connection mechanism, the two ends of the inner side of the external fixed pipe correspond to two sections of water pipes respectively, the internal connection mechanism is installed on the inner side of the external fixed pipe at the opening position of the water pipe, the locking mechanism is located on the outer side of the internal connection mechanism, the inner side of the external fixed pipe and the stepped position of the water pipe opening are provided with a conical ring portion of the sealing rubber ring on the internal connection mechanism, and a plurality of guide blocks are arranged in a circumferential array on the inner side of the conical ring; An inner support assembly is provided inside the sealing rubber ring, and the inner support assembly is used to support the conical ring portion of the sealing rubber ring. When the inner support assembly supports the conical ring portion of the sealing rubber ring, the step between the water pipe and the outer fixed pipe is filled, thereby reducing the vortex caused by the step and avoiding subsequent vibration and looseness caused by the vortex. One side of the sealing rubber ring cooperates with the locking mechanism through a telescopic component. The locking mechanism is used to provide preliminary position adjustment and support for the sealing rubber ring, and the locking component on the locking mechanism is used to prevent the telescopic component from loosening.

[0006] Furthermore, the inner support component includes a stress-bearing sheet, an extrusion bracket, a support bracket, and an expansion bracket. The stress-bearing sheet, the extrusion bracket, the support bracket, and the expansion bracket are integrally formed. The stress-bearing sheet is a circular ring sheet used to transmit the initial adjustment support provided by the locking mechanism. The extrusion bracket is composed of two outwardly convex arc-shaped sheets. The support bracket is an X-shaped cross sheet. The expansion bracket is a V-shaped circular ring sheet. The V-shaped opening of the expansion bracket corresponds to the support bracket. The expansion bracket fits the conical ring portion of the sealing rubber ring.

[0007] Furthermore, the telescopic assembly includes a first mating thread arranged on the sealing rubber ring, and a second mating thread is correspondingly arranged on the lock cylinder of the locking mechanism, and the first mating thread and the second mating thread are mated.

[0008] Furthermore, the locking assembly of the locking mechanism includes an offset plate, which is axially slidably connected to the inside of the lock cylinder, and two of the offset plates are symmetrically arranged inside the lock cylinder. The inner side of the offset plate is provided with offset teeth, and an extrusion block is provided at one end of the offset plate away from the sealing rubber ring. The extrusion block is rotatably connected to the lock cylinder, and a locking rod is connected to the outside of the extrusion block. A protrusion is provided on the extrusion block to squeeze the offset plate to move, and the locking rod is an L-shaped shift block.

[0009] Furthermore, four extrusion brackets are provided, and a circular array is arranged inside the sealing rubber ring.

[0010] Furthermore, the extruded bracket is an arc structure, and the curvature range of the extruded bracket is 30°~45°.

[0011] Furthermore, a stress-releasing groove is provided on the expansion bracket, so that the expansion bracket can be contracted when squeezed by the water pipe and the external fixing pipe, and can be expanded when supported by the supporting bracket.

[0012] Furthermore, the guide block is an arc-shaped piece, and the guide block is integrally formed with the sealing rubber ring.

[0013] Furthermore, the height of the guide block at the water inlet end is lower than the height of the guide block at the water outlet end.

[0014] Furthermore, the dislocation piece is an arc-shaped piece, and the arc-shaped structure is used to avoid bending when being squeezed by the squeezing block. The curvature range of the dislocation piece is 10°~20°.

[0015] The beneficial effects of the present invention are as follows: the present invention utilizes a locking mechanism to push the internal connection mechanism to fill the step at the matching position of the water pipe and the external fixed pipe, and at the same time utilizes a guide block to guide and stabilize the water flow, thereby preventing the high-pressure water from loosening at the interface when the pressure changes and the impact continues, and utilizes a locking mechanism to lock the internal connection mechanism to prevent mechanical loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a schematic diagram of the external structure of an embodiment of a plastic pipe high-pressure quick connector of the present invention; Figure 2 It is a schematic diagram of the internal structure of an embodiment of a plastic pipe high-pressure quick connector of the present invention; Figure 3 This is a schematic diagram of the external structure of a sealing rubber ring of an embodiment of a plastic pipe high-pressure quick connector of the present invention; Figure 4 This is a schematic diagram of the internal structure of a sealing rubber ring of an embodiment of a plastic pipe high-pressure quick connector of the present invention; Figure 5 This is a schematic structural diagram of an inner support assembly of an embodiment of a plastic pipe high-pressure quick connector of the present invention; Figure 6 This is a schematic diagram of the internal structure of a locking mechanism of an embodiment of a plastic pipe high-pressure quick connector of the present invention; Figure 7 It is a front cross-sectional view of an embodiment of a plastic pipe high-pressure quick connector of the present invention; Figure 8 A partial cross-sectional view of an inner support assembly of an embodiment of a plastic pipe high-pressure quick connector of the present invention; Fig. 9 It is a structural schematic diagram of a locking state of a locking rod of an embodiment of a plastic pipe high-pressure quick connector of the present invention; Fig.10 This is a structural schematic diagram of an embodiment of a plastic pipe high-pressure quick connector of the present invention, in which a locking rod is in an unlocked state; Fig.11 The present invention is a schematic diagram of the staggered tooth structure of an embodiment of a plastic pipe high-pressure quick connector.

[0018] In the figure: 1. water pipe; 2. external fixing pipe; 3. locking mechanism; 4. internal connecting mechanism; 5. guide block; 31. locking rod; 32. locking cylinder; 33. extrusion block; 34. offset plate; 341. offset teeth; 41. sealing rubber ring; 42. first matching thread; 43. internal support assembly; 44. second matching thread; 431. force-bearing plate; 432. extrusion bracket; 433. support bracket; 434. expansion bracket. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] An embodiment of a plastic pipe high pressure quick connector of the present invention is as follows Figures 1 to 11 As shown, it includes an outer fixed tube 2 for providing external support, an inner connecting mechanism 4 for cooperating and sealing the internal water pipe 1, and a locking mechanism 3 for preventing loosening and locking the inner connecting mechanism 4. The two ends of the inner side of the outer fixed tube 2 correspond to two sections of water pipes 1 respectively. The inner connecting mechanism 4 is installed on the inner side of the outer fixed tube 2 at the opening position of the water pipe 1. The locking mechanism 3 is located on the outer side of the inner connecting mechanism 4. The conical ring part of the sealing rubber ring 41 on the inner connecting mechanism 4 is arranged at the stepped position between the inner side of the outer fixed tube 2 and the opening of the water pipe 1. Figure 7 , Figure 8 As shown, a plurality of guide blocks 5 are arranged in a circular array on the inner side of the cone ring; An inner support assembly 43 is provided inside the sealing rubber ring 41, and the inner support assembly 43 is used to support the conical ring portion of the sealing rubber ring 41. When the inner support assembly 43 supports the conical ring portion of the sealing rubber ring 41, the step between the water pipe 1 and the outer fixed pipe 2 is filled, thereby reducing the vortex caused by the step and avoiding subsequent vibration and looseness caused by the vortex. One side of the sealing rubber ring 41 cooperates with the locking mechanism 3 through the telescopic component. The locking mechanism 3 is used to provide preliminary position adjustment and support for the sealing rubber ring 41, and the locking component on the locking mechanism 3 is used to prevent the telescopic component from loosening.

[0021] In this embodiment, the inner support assembly 43 includes a stress-bearing sheet 431, an extrusion bracket 432, a support bracket 433, and an expansion bracket 434. The stress-bearing sheet 431, the extrusion bracket 432, the support bracket 433, and the expansion bracket 434 are integrally formed. The stress-bearing sheet 431 is a circular thin sheet used to transmit the initial adjustment support provided by the locking mechanism 3, and the extrusion bracket 432 is composed of two convex arc-shaped sheets. Figure 5 , Figure 6As shown, the support bracket 433 is an X-shaped cross piece, and the expansion bracket 434 is a V-shaped circular ring piece. Figure 7 , Figure 8 As shown, the V-shaped opening of the expansion bracket 434 corresponds to the support bracket 433 , and the expansion bracket 434 fits the conical ring portion of the sealing rubber ring 41 .

[0022] In this embodiment, the telescopic assembly includes a first mating thread 42 disposed on the sealing rubber ring 41 , and a second mating thread 44 is correspondingly disposed on the lock cylinder 32 of the locking mechanism 3 , and the first mating thread 42 and the second mating thread 44 are mated.

[0023] In this embodiment, the locking assembly of the locking mechanism 3 includes an offset plate 34, and the offset plate 34 is axially slidably connected to the inside of the lock cylinder 32. The two offset plates 34 are symmetrically arranged inside the lock cylinder 32. The inner side of the offset plate 34 is provided with an offset tooth 341. When the offset tooth 341 is in the initial position, it overlaps with the second matching thread 44. When the offset tooth 341 is in the locking position, it is offset from the second matching thread 44. An extrusion block 33 is provided at one end of the offset plate 34 away from the sealing rubber ring 41. The extrusion block 33 is rotatably connected to the lock cylinder 32. The extrusion block 33 is connected to the outside of the lock rod 31. The extrusion block 33 is provided with a protrusion for extruding the dislocation plate 34 to move, and the lock rod 31 is an L-shaped shift block.

[0024] In this embodiment, four extrusion brackets 432 are provided, and are arranged in a circular array inside the sealing rubber ring 41 .

[0025] In this embodiment, the extrusion bracket 432 is an arc structure, and the arc range of the extrusion bracket 432 is 30° to 45°.

[0026] In this embodiment, a stress-releasing groove is provided on the expansion bracket 434 , so that the expansion bracket 434 can be contracted when squeezed by the water pipe 1 and the external fixing pipe 2 , and can be expanded when supported by the supporting bracket 433 .

[0027] In this embodiment, the guide block 5 is an arc-shaped piece, and the guide block 5 is integrally formed with the sealing rubber ring 41 .

[0028] In this embodiment, the height of the guide block 5 at the water inlet end is lower than the height of the guide block 5 at the water outlet end.

[0029] In this embodiment, the dislocation piece 34 is an arc-shaped piece, and the arc-shaped structure is used to avoid bending when being squeezed by the squeezing block 33. The curvature range of the dislocation piece 34 is 10° to 20°.

[0030] The working principle is as follows: when two water pipes 1 need to be matched, first insert one end of the external fixed pipe 2 into one side of the first water pipe 1, and then move the external fixed pipe 2 to the center position of the two water pipes 1 after the two water pipes 1 are aligned. Figure 7As shown, at this time, because the sealing rubber ring 41 is not supported by the locking mechanism 3, the conical ring portion of the sealing rubber ring 41 is squeezed into the gap between the water pipe 1 and the external fixed pipe 2, and the expansion bracket 434 is also squeezed and not expanded; At this time, the lock rod 31 is in the open state. Fig.10 As shown, the lock cylinder 32 is rotated, and the second mating thread 44 on the lock cylinder 32 is mated with the first mating thread 42 on the sealing rubber ring 41. The first mating thread 42 and the sealing rubber ring 41 are squeezed and moved inward until the expansion bracket 434 passes over the step between the water pipe 1 and the external fixed pipe 2. At this time, the potential energy of the expansion bracket 434 is released, thereby supporting the conical ring part of the sealing rubber ring 41 and expanding it. Figure 7 As shown, since the extrusion bracket 432 and the support bracket 433 are one convex structure and one cross structure, it can ensure the support effect between the center position of the sealing rubber ring 41 and the water pipe 1 and the external fixed pipe 2, and can also ensure that the support bracket 433 supports the expansion bracket 434 and the cone ring part, ensuring sufficient support; At this time, the first mating thread 42 and the second mating thread 44 need to be locked, and the locking rod 31 is pressed so that the locking rod 31 moves from Fig.10 The status changes to Fig. 9 State, at this time, the locking rod 31 and the extrusion block 33 rotate, the protrusion on the extrusion block 33 squeezes the dislocation piece 34, and the protrusion squeezes the dislocation piece 34 to move horizontally, so that the dislocation teeth 341 on the dislocation piece 34 and the second matching thread 44 are dislocated, so as to bite and lock the first matching thread 42 to prevent loosening. After the locking rod 31 is buckled, use the tape to wrap around the outside for several turns to prevent the locking rod 31 from loosening and further ensure locking; After water flows inside, the water flow at the water inlet is initially stabilized by the guidance of the guide block 5, and the guide block 5 at the water outlet guides it again, thereby avoiding the high-pressure water flow from forming resistance and vortex at the step. Even if water hammer occurs, the extrusion bracket 432 and the support bracket 433 can be used for support.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A plastic pipe high-pressure quick connector, characterized in that: The invention comprises an external fixed tube (2) for providing external support, an internal connection mechanism (4) for cooperating and sealing an internal water pipe (1), and a locking mechanism (3) for preventing loosening and locking the internal connection mechanism (4), wherein the two ends of the inner side of the external fixed tube (2) correspond to two sections of water pipe (1) respectively, the internal connection mechanism (4) is installed on the inner side of the external fixed tube (2) at the opening position of the water pipe (1), the locking mechanism (3) is located on the outer side of the internal connection mechanism (4), and a conical ring portion of a sealing rubber ring (41) on the internal connection mechanism (4) is arranged at a stepped position between the inner side of the external fixed tube (2) and the opening of the water pipe (1), and a plurality of guide blocks (5) are arranged in a circular array on the inner side surface of the conical ring; the sealing rubber ring (41) is provided on the inner side of the external fixed tube (2) and the opening of the water pipe (1). An inner support component (43) is arranged inside the sealing rubber ring (41), and the inner support component (43) is used to support the conical ring portion of the sealing rubber ring (41). When the inner support component (43) supports the conical ring portion of the sealing rubber ring (41), the step at the matching position of the water pipe (1) and the external fixed pipe (2) is filled, thereby reducing the vortex caused by the step and avoiding subsequent vibration and loosening caused by the vortex; one side of the sealing rubber ring (41) cooperates with the locking mechanism (3) through a telescopic component, and the locking mechanism (3) is used to provide preliminary position adjustment and support for the sealing rubber ring (41), and the locking component on the locking mechanism (3) is used to avoid loosening of the telescopic component.

2. A plastic pipe high-voltage quick connector according to claim 1, characterized in that: The inner support assembly (43) comprises a stress-bearing sheet (431), an extrusion bracket (432), a support bracket (433), and an expansion bracket (434); the stress-bearing sheet (431), the extrusion bracket (432), the support bracket (433), and the expansion bracket (434) are integrally formed; the stress-bearing sheet (431) is a circular thin sheet used to transmit the initial adjustment support provided by the locking mechanism (3); the extrusion bracket (432) is composed of two outwardly convex arc-shaped sheets; the support bracket (433) is an X-shaped cross sheet; the expansion bracket (434) is a V-shaped circular ring sheet; the V-shaped opening of the expansion bracket (434) corresponds to the support bracket (433); and the expansion bracket (434) fits the conical ring portion of the sealing rubber ring (41).

3. A plastic pipe high-voltage quick connector according to claim 2, characterized in that: The telescopic assembly comprises a first mating thread (42) arranged on the sealing rubber ring (41), and a second mating thread (44) correspondingly arranged on the lock cylinder (32) of the locking mechanism (3), wherein the first mating thread (42) and the second mating thread (44) are mating.

4. A plastic pipe high-pressure quick connector according to claim 3, characterized in that: The locking assembly of the locking mechanism (3) comprises a dislocation piece (34), the dislocation piece (34) is axially slidably connected inside the lock cylinder (32), two dislocation pieces (34) are symmetrically arranged inside the lock cylinder (32), the inner side surface of the dislocation piece (34) is provided with dislocation teeth (341), an extrusion block (33) is provided at one end of the dislocation piece (34) away from the sealing rubber ring (41), the extrusion block (33) is rotatably connected to the lock cylinder (32), the extrusion block (33) is externally connected to a locking rod (31), the extrusion block (33) is provided with a protrusion for squeezing the dislocation piece (34) to move, and the locking rod (31) is an L-shaped shift block.

5. A plastic pipe high-pressure quick connector according to claim 2, characterized in that: Four extrusion brackets (432) are provided, and are arranged in a circular array inside the sealing rubber ring (41).

6. A plastic pipe high-voltage quick connector according to claim 5, characterized in that: The extrusion bracket (432) is an arc structure, and the arc range of the extrusion bracket (432) is 30° to 45°.

7. A plastic pipe high-pressure quick connector according to claim 2, characterized in that: The expansion bracket (434) is provided with a stress-relieving slot, which is used to enable the expansion bracket (434) to contract when it is squeezed by the water pipe (1) and the external fixing pipe (2), and to expand when it is supported by the supporting bracket (433).

8. The plastic pipe high-pressure quick connector according to claim 1, characterized in that: The guide block (5) is an arc-shaped piece, and the guide block (5) is integrally formed with the sealing rubber ring (41).

9. A plastic pipe high-pressure quick connector according to claim 8, characterized in that: The height of the guide block (5) at the water inlet end is lower than the height of the guide block (5) at the water outlet end.

10. A plastic pipe high-voltage quick connector according to claim 4, characterized in that: The dislocation piece (34) is an arc-shaped piece, and when being squeezed by the squeezing block (33), the arc-shaped structure is used to avoid bending, and the arc range of the dislocation piece (34) is 10° to 20°.

Images