Rotary joint of water supply pipeline

Abstract

The utility model provides a water supply pipeline rotary joint which comprises an outer pipe fitting, an inner pipe fitting, a limiting piece and a pressing piece, a protruding limiting ring is arranged on the outer circumferential wall of one end of the inner pipe fitting, the end, provided with the limiting ring, of the inner pipe fitting extends into the outer pipe fitting, a protruding limiting part is arranged on the inner circumferential wall of the outer pipe fitting, and the pressing piece is arranged on the limiting part. The limiting part is provided with a first limiting groove attached to the limiting ring, the inner pipe fitting is sleeved with the limiting piece, the limiting piece is provided with a second limiting groove matched with the limiting ring, the limiting piece and the limiting part are located on the two opposite sides of the limiting ring respectively, the inner pipe fitting is sleeved with the pressing piece, and the pressing piece is detachably connected with the outer pipe fitting. Part of the pressing piece stretches into the position between the inner pipe fitting and the outer pipe fitting and presses the limiting piece and the limiting ring on the limiting part. According to the rotary joint, the technical problems that an existing rotary joint is complex in structure and tedious in installation step are solved, and the technical effects that the overall structure is simplified, and assembling is convenient are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy projects, in particular to a water supply pipeline rotary joint. Background Art

[0002] Floating vessel water intake refers to the process of taking water from a river, lake or reservoir by a floating vessel placed in the water body. It is a common water supply project. A swivel joint is required for the connection between the water supply pipe inside the floating vessel and the water supply pipe on the ground.

[0003] The Chinese utility model patent with announcement number CN215111174U discloses a rotary joint for water pipes, including a clamp ring, an interface, a waterproof ring, a spherical bead, a shaft, a sand-proof ring, a soft water pipe and a hardware sleeve. The sand-proof ring is inlaid and installed at one end of the shaft, the interface is sleeved at one end of the shaft, a spherical bead is installed between the interface and the shaft, the waterproof ring is inlaid on the outer surface of the shaft below the spherical bead, the soft water pipe is plugged at one end of the shaft away from the interface, the hardware sleeve is sleeved on the outer side of the soft water pipe, and the clamp ring is inlaid on the outer surface of the shaft above the soft water pipe. The above-mentioned rotary joint for water pipes is provided with a sand-proof ring, a waterproof ring, a clamp ring and a hardware sleeve to increase the fixing effect and sealing effect of the rotary joint.

[0004] The structure of the rotary joint for water pipes disclosed in the above utility model patent is relatively complicated. During installation, it is necessary to sequentially sleeve the waterproof ring, spherical beads and sand-proof ring on the designated positions on the shaft rod, and then combine the shaft rod with the interface. The installation steps are cumbersome and inconvenient. Utility Model Content

[0005] In view of the deficiencies existing in the prior art, the utility model provides a water supply pipe rotary joint, which solves the problems existing in the prior art that the rotary joint has a relatively complex structure and cumbersome installation steps.

[0006] According to an embodiment of the utility model, a water supply pipe rotary joint comprises an outer pipe fitting, an inner pipe fitting, a limit piece and a pressing piece, a protruding limit ring is provided on the outer peripheral wall of one end of the inner pipe fitting and the inner pipe fitting has one end of the limit ring extending into the outer pipe fitting, a protruding limit portion is provided on the inner peripheral wall of the outer pipe fitting, a first limit groove which fits with the limit ring is provided on the limit portion, the limit piece is sleeved on the inner pipe fitting and a second limit groove which matches with the limit ring is provided on the limit piece, the limit piece and the limit portion are respectively located on opposite sides of the limit ring, the pressing piece is sleeved on the inner pipe fitting and the pressing piece is detachably connected to the outer pipe fitting, a part of the pressing piece extends between the inner pipe fitting and the outer pipe fitting and presses the limit piece and the limit ring on the limit portion.

[0007] Furthermore, the clamping member includes a clamping ring, which is sleeved on the inner tube member and has a width equal to a width of a gap between the inner tube member and the outer tube member.

[0008] Furthermore, a filler is filled between the inner tube and the outer tube, and the filler is located between the clamping ring and the limiting member, and the clamping ring presses the filler onto the limiting member.

[0009] Furthermore, the clamping member is provided with a plurality of first mounting portions at intervals along the circumference of the clamping member, the first mounting portions are respectively provided with rotatable locking screws and the locking screws are provided with locking knobs matching the locking screws, the outer tube member is provided with a second mounting portion parallel to the first mounting portion, the second mounting portion is provided with a slot for the locking screw to pass through and the locking knob abuts against a side of the second mounting portion away from the first mounting portion.

[0010] Furthermore, the first mounting portion is provided with a mounting groove, a rotating shaft is provided in the mounting groove, and the locking screw is provided with a mounting hole matched with the rotating shaft.

[0011] Furthermore, an operating ring is provided on the locking knob, and the operating ring is located on a side of the locking knob away from the first mounting portion.

[0012] Furthermore, there is a gap between the limiting ring and the limiting portion and the limiting member, and the gap between the limiting ring and the limiting portion and the gap between the limiting ring and the limiting member are filled with grease respectively.

[0013] Furthermore, the outer pipe fitting includes a main body portion, a reducing portion and a connecting portion which are connected in sequence, the inner diameter of the main body portion is larger than the outer diameter of the inner pipe fitting and the limiting portion is arranged on the main body portion, the outer diameter of the reducing portion gradually decreases in the direction away from the inner pipe fitting, and the outer diameter of the connecting portion is consistent with the outer diameter of the inner pipe fitting.

[0014] Furthermore, a first threaded portion is provided on the outer peripheral wall of the connecting portion, and the first threaded portion is located at an end of the connecting portion away from the inner pipe member.

[0015] Furthermore, a second threaded portion is provided on an outer peripheral wall of one end of the inner tube away from the outer tube, and the second threaded portion is exposed from the outer tube.

[0016] Compared with the prior art, the utility model has the following beneficial effects: by adopting an outer pipe fitting, an inner pipe fitting, a limit piece and a clamping piece to form a rotary joint, after inserting one end of the inner pipe fitting with a limit ring into the interior of the outer pipe fitting, the limit ring cooperates with the first limit groove on the limit part, and then the limit piece is placed between the inner pipe fitting and the outer pipe fitting so that the second limit groove cooperates with the limit ring, and finally the clamping piece is inserted between the inner pipe fitting and the outer pipe fitting and the clamping piece is connected to the outer pipe fitting to complete the assembly of the rotary joint, the assembly steps are simple, and after the rotary joint is assembled, the limit ring can be rotated in the space between the limit part and the limit piece so that the inner pipe fitting can rotate relative to the outer pipe fitting, and at the same time, the limit piece and the limit ring are pressed against the limit part by the clamping piece to ensure that the inner pipe fitting and the outer pipe fitting remain closed, which solves the technical problems of the existing rotary joint having a relatively complex structure and cumbersome installation steps, and produces the technical effects of simplifying the overall structure and facilitating assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a water supply pipe rotary joint according to an embodiment of the utility model;

[0018] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0019] Figure 3 A cross-sectional view of a water supply pipe rotary joint according to an embodiment of the utility model;

[0020] Figure 4 for Figure 3 Enlarged view of point B in the middle.

[0021] In the above drawings: 1. outer pipe; 11. limiting part; 12. first limiting groove; 13. second mounting part; 14. slotting; 15. main body; 16. reducing part; 17. connecting part; 18. first threaded part; 2. inner pipe; 21. limiting ring; 22. second threaded part; 3. limiting member; 31. second limiting groove; 4. clamping member; 41. clamping ring; 42. first mounting part; 43. locking screw; 44. locking knob; 45. mounting groove; 46. rotating shaft; 47. operating ring; 5. packing. DETAILED DESCRIPTION

[0022] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] like Figures 1 to 4 As shown, an embodiment of the utility model proposes a water supply pipe rotating joint, which is used to connect water supply pipes in water conservancy projects such as floating boat water intake, so that the water supply pipes at both ends of the water supply pipe rotating joint can rotate relatively to meet the project requirements.

[0024] Please refer to Figure 1 and Figure 3 The water supply pipe rotary joint includes an outer pipe fitting 1, an inner pipe fitting 2, a stopper 3 and a pressing member 4, wherein a protruding stopper ring 21 is provided on the outer peripheral wall of one end of the inner pipe fitting 2, and the inner pipe fitting 2 has one end of the stopper ring 21 extending into the outer pipe fitting 1, a protruding stopper portion 11 is provided on the inner peripheral wall of the outer pipe fitting 1, and a first stopper groove 12 is provided on the stopper portion 11 to fit with the stopper ring 21, and after one end of the inner pipe fitting 2 is inserted into the outer pipe fitting 1, the stopper ring 21 fits with the first stopper groove 12, and the stopper 3 is sleeved on the inner pipe fitting 2 and a second stopper groove 31 matching with the stopper ring 21 is provided on the stopper 3, and after the stopper 3 is placed between the inner pipe fitting 2 and the outer pipe fitting 1, the stopper 3 is located at the stopper ring 21 away from the stopper ring 21 On one side of the limiting portion 11, the first limiting groove 12 and the second limiting groove 31 are respectively fitted with the opposite sides of the limiting ring 21, the pressing piece 4 is sleeved on the inner pipe 2 and the pressing piece 4 is detachably connected to the outer pipe 1. After the pressing piece 4 is combined with the outer pipe 1, part of the pressing piece 4 extends between the inner pipe 2 and the outer pipe 1 and presses the limiting piece 3 and the limiting ring 21 on the limiting portion 11 to keep the inner pipe 2 connected to the outer pipe 1. At the same time, the limiting ring 21 can rotate in the space between the limiting portion 11 and the limiting piece 3 to enable the inner pipe 2 to rotate relative to the outer pipe 1. The two water supply pipes to be connected are respectively connected to the inner pipe 2 and the outer pipe 1 to achieve the rotational connection of the two water supply pipes.

[0025] Specifically, the assembly steps of the water supply pipe rotary joint provided in this embodiment are: first, insert the end of the inner pipe fitting 2 having the limit ring 21 into the outer pipe fitting 1, so that the limit ring 21 fits with the first limit groove 12, and then put the limit member 3 between the inner pipe fitting 2 and the outer pipe fitting 1 so that the second limit groove 31 cooperates with the side of the limit ring 21 away from the limit portion 11, and finally, insert the clamping member 4 between the inner pipe fitting 2 and the outer pipe fitting 1 and connect the clamping member 4 to the outer pipe fitting 1, so that the clamping member 4 presses the limit member 3 and the limit ring 21 on the limit portion 11 to complete the assembly of the water supply pipe rotary joint. The water supply pipe rotary joint provided in this embodiment has a simple structure and is easy to assemble, which is convenient for rapid construction operations. After the water supply pipe rotary joint is assembled, the two water supply pipes are respectively combined with the inner pipe 2 and the outer pipe 1 to enable the two water supply pipes to rotate relative to each other. At the same time, the limiting member 3 and the limiting ring 21 are pressed against the limiting portion 11 by the clamping member 4 to ensure that the water supply pipe rotary joint remains closed, thereby ensuring that the water supply pipe rotary joint is reliable.

[0026] Please combine Figure 3 and Figure 4 The clamping member 4 includes a clamping ring 41, which is sleeved on the inner tube 2 and has a width equal to the width of the interval between the inner tube 2 and the outer tube 1. The clamping ring 41 is arranged on the clamping member 4, and the width of the clamping ring 41 is equal to the width of the interval between the inner tube 2 and the outer tube 1, so as to prevent the clamping ring 41 from being misaligned with the stopper 3, and ensure that the stopper 3 and the stopper ring 21 are tightly fitted under the action of the clamping member 4.

[0027] In detail, a filler 5 is filled between the inner pipe 2 and the outer pipe 1, and the filler 5 is located between the clamping ring 41 and the stopper 3, and the clamping ring 41 presses the filler 5 onto the stopper 3. The filler 5 is used to fill the gap between the inner pipe 2 and the outer pipe 1, which can further improve the sealing performance of the water supply pipe rotary joint, prevent the water passing through the water supply pipe rotary joint during the operation of the water supply pipe rotary joint from leaking from the gap between the inner pipe 2 and the outer pipe 1, and ensure that the water supply pipe rotary joint is stable and reliable.

[0028] like Figure 1 and Figure 2 As shown, the clamping member 4 is provided with a plurality of first mounting portions 42 at intervals along the circumference of the clamping member 4, the first mounting portions 42 are respectively provided with rotatable locking screws 43 and the locking screws 43 are provided with locking knobs 44 matching the locking screws 43, the outer tube member 1 is provided with a second mounting portion 13 parallel to the first mounting portion 42, the second mounting portion 13 is provided with a slot 14 for the locking screw 43 to pass through and the locking knob 44 abuts against a side of the second mounting portion 13 away from the first mounting portion 42. When the clamping member 4 is combined with the outer pipe member 1, the locking screw 43 is rotated to make the locking screw 43 enter the slot 14, and the locking knob 44 is rotated to make the locking knob 44 move along the axial direction of the locking screw 43 to a position abutting against the second mounting portion 13, so that the clamping member 4 can be fixed on the outer pipe member 1, and by tightening the locking knob 44, it is ensured that the clamping member 4 presses the limit member 3 and the limit ring 21 on the limit portion 11, which is beneficial to improve the stability of the overall structure of the water supply pipe rotary joint.

[0029] Specifically, the first mounting portion 42 is provided with a mounting groove 45, a rotating shaft 46 is provided in the mounting groove 45, and the locking screw 43 is provided with a mounting hole matched with the rotating shaft 46. The locking screw 43 is installed in the mounting groove 45 through the matching of the mounting hole and the rotating shaft 46, so that the locking screw 43 can smoothly rotate on the first mounting portion 42 and enter or exit the slot 14, so as to facilitate the installation of the pressing member 4 on the outer tube 1.

[0030] like Figure 2 As shown, the locking knob 44 is provided with an operating ring 47, and the operating ring 47 is located on a surface of the locking knob 44 away from the first mounting portion 42. The operating ring 47 is provided on the locking knob 44, and the operating ring 47 can be operated to conveniently rotate the locking knob 44 so that the locking knob 44 moves along the axial direction of the locking screw 43, and ensure that the locking knob 44 can be rotated to a position that locks the pressing member 4 on the outer tube 1.

[0031] Please refer to Figure 4 There is a gap between the limit ring 21 and the limit part 11 and the limit member 3, and the gap between the limit ring 21 and the limit part 11 and the gap between the limit ring 21 and the limit member 3 are filled with grease respectively. By filling the gap between the limit ring 21 and the limit part 11 and the gap between the limit ring 21 and the limit member 3 with the grease, the friction between the limit ring 21 and the limit part 11 and the limit member 3 is reduced, so that the inner pipe 2 can rotate smoothly relative to the outer pipe 1, and the wear of the inner pipe 2 when rotating relative to the outer pipe 1 is reduced, which is conducive to extending the service life of the water supply pipe rotary joint.

[0032] Please combine Figure 1 and Figure 2The outer pipe fitting 1 comprises a main body 15, a reducing part 16 and a connecting part 17 which are connected in sequence. The inner diameter of the main body 15 is larger than the outer diameter of the inner pipe fitting 2 and the stopper 11 is arranged on the main body 15. The outer diameter of the reducing part 16 gradually decreases in the direction away from the inner pipe fitting 2, and the outer diameter of the connecting part 17 is consistent with the outer diameter of the inner pipe fitting 2. The outer pipe fitting 1 is composed of the main body 15, the reducing part 16 and the connecting part 17, wherein the inner diameter of the main body 15 is larger than the outer diameter of the inner pipe fitting 2, so that the inner pipe fitting 2 can be inserted into the main body 15 and cooperate with the stopper 11, and the outer diameter of the reducing part 16 gradually decreases in the direction away from the inner pipe fitting 2 so that the end of the outer pipe fitting 1 away from the inner pipe fitting 2 gradually shrinks until the outer diameter of the connecting part 17 is consistent with the outer diameter of the inner pipe fitting 2, so that the outer pipe fitting 1 and the inner pipe fitting 2 can be connected to the water supply pipe of the same size, which is convenient for the use of the water supply pipe rotary joint.

[0033] In this embodiment, a first threaded portion 18 is provided on the outer peripheral wall of the connection portion 17, and the first threaded portion 18 is located at one end of the connection portion 17 away from the inner pipe 2. A second threaded portion 22 is provided on the outer peripheral wall of the inner pipe 2 away from the outer pipe 1, and the second threaded portion 22 is exposed from the outer pipe 1. The first threaded portion 18 is provided on the outer peripheral wall of the connection portion 17, and the second threaded portion 22 is provided on the outer peripheral wall of the inner pipe 2. The first threaded portion 18 and the second threaded portion 22 are used to cooperate with the water supply pipe to connect the outer pipe 1 and the inner pipe 2 to the water supply pipe respectively, so as to facilitate the installation of the water supply pipe rotary joint between the two water supply pipes while ensuring the reliable connection between the water supply pipe rotary joint and the water supply pipe.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A water supply pipe rotary joint, characterized in that: It includes an outer tube, an inner tube, a limit piece and a pressing piece, a protruding limit ring is provided on the outer circumferential wall of one end of the inner tube, and the inner tube has one end of the limit ring extending into the outer tube, a protruding limit part is provided on the inner circumferential wall of the outer tube, a first limit groove which fits with the limit ring is provided on the limit part, the limit piece is sleeved on the inner tube and a second limit groove which matches with the limit ring is provided on the limit piece, the limit piece and the limit part are respectively located on opposite sides of the limit ring, the pressing piece is sleeved on the inner tube and the pressing piece is detachably connected to the outer tube, a part of the pressing piece extends between the inner tube and the outer tube and presses the limit piece and the limit ring on the limit part.

2. A water supply pipe rotary joint according to claim 1, characterized in that: The clamping member comprises a clamping ring, which is sleeved on the inner tube and has a width equal to a width of a gap between the inner tube and the outer tube.

3. A water supply pipe rotary joint according to claim 2, characterized in that: A filler is filled between the inner tube and the outer tube and the filler is located between the clamping ring and the limiting member, and the clamping ring presses the filler onto the limiting member.

4. A water supply pipe rotary joint according to claim 1, characterized in that: The clamping member is provided with a plurality of first mounting portions at intervals along the circumference of the clamping member, the first mounting portions are respectively provided with rotatable locking screws and the locking screws are provided with locking knobs matching the locking screws, the outer tube is provided with a second mounting portion parallel to the first mounting portion, the second mounting portion is provided with a slot for the locking screw to pass through and the locking knob abuts against a side of the second mounting portion away from the first mounting portion.

5. A water supply pipe rotary joint as claimed in claim 4, characterized in that: The first mounting portion is provided with a mounting groove, a rotating shaft is provided in the mounting groove, and the locking screw is provided with a mounting hole matched with the rotating shaft.

6. A water supply pipe rotary joint according to claim 4, characterized in that: An operating ring is provided on the locking knob, and the operating ring is located on a side of the locking knob away from the first mounting portion.

7. A water supply pipe rotary joint according to claim 1, characterized in that: There is a gap between the limiting ring and the limiting portion and the limiting member, and the gap between the limiting ring and the limiting portion and the gap between the limiting ring and the limiting member are filled with grease respectively.

8. A water supply pipe rotary joint according to claim 1, characterized in that: The outer pipe fitting includes a main body, a reducing portion and a connecting portion which are connected in sequence. The inner diameter of the main body is larger than the outer diameter of the inner pipe fitting and the limiting portion is arranged on the main body. The outer diameter of the reducing portion gradually decreases in the direction away from the inner pipe fitting, and the outer diameter of the connecting portion is consistent with the outer diameter of the inner pipe fitting.

9. A water supply pipe rotary joint according to claim 8, characterized in that: A first threaded portion is disposed on the outer peripheral wall of the connecting portion, and the first threaded portion is located at an end of the connecting portion away from the inner pipe member.

10. A water supply pipe rotary joint according to claim 1, characterized in that: A second threaded portion is disposed on an outer peripheral wall of one end of the inner tube away from the outer tube, and the second threaded portion is exposed outside the outer tube.

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