CN108679346B - Five-way joint capable of changing angles - Google Patents
Five-way joint capable of changing angles Download PDFInfo
- Publication number
- CN108679346B CN108679346B CN201810810717.0A CN201810810717A CN108679346B CN 108679346 B CN108679346 B CN 108679346B CN 201810810717 A CN201810810717 A CN 201810810717A CN 108679346 B CN108679346 B CN 108679346B
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- CN
- China
- Prior art keywords
- pipe joint
- connecting port
- joint
- throttling
- traction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/02—Branch units, e.g. made in one piece, welded, riveted
- F16L41/03—Branch units, e.g. made in one piece, welded, riveted comprising junction pieces for four or more pipe members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/22—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts
- F16L33/223—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts the sealing surfaces being pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/027—Throttle passages
Abstract
The invention discloses a five-way joint capable of changing angles, which comprises a first pipe joint, a second pipe joint, a third pipe joint, a fourth pipe joint, a fifth pipe joint, a joint seat and a clamping device, wherein the joint seat is provided with a first connecting port, a second connecting port, a third connecting port, a fourth connecting port and a fifth connecting port, a pulling device is sleeved on the right side of a threaded part, the second connecting port is connected with the second pipe joint through a bearing, the upper end of the third connecting port is connected with the third pipe joint through the clamping device, the lower end of the third connecting port is connected with the third pipe joint through threads, and a throttling device is arranged on one side of the third pipe joint. The five-way joint with the changeable angle can be connected with pipe joints with different angles, the joint is stable in connection and can be detached, the service life is prolonged, the flow rate of medium circulation can be adjusted, the requirements of different working states are met, and the service performance is improved.
Description
[ field of technology ]
The invention relates to the technical field of connecting pieces, in particular to a five-way connector with changeable angles.
[ background Art ]
The joint is a connecting tool between pipelines and is a detachable connecting point between an element and the pipeline. Plays an indispensable important role in the pipe fitting. At present, joints in the market mainly comprise double joints, elbows, three-way joints, four-way joints, five-way joints and the like. In the five-way joint in the prior art, the five-way joint cannot rotate and can only be connected with a pipeline in a fixed direction; when the hose is connected with the hose, the hose is usually required to be carefully aligned with the hose connector, then the hose is sleeved into the hose connector, the time for sleeving the hose connector is long, the hose connector is not easy to tighten, and the phenomenon of medium leakage is easy to occur; meanwhile, after the pipe joints are connected, the medium with fixed flow can only pass through, when the flow of the medium needs to be regulated, the pipe joints with different sizes need to be replaced, and the use cost is increased.
[ invention ]
The invention aims to overcome the defects of the prior art, and provides a five-way joint with changeable angles, which can be connected with pipe joints with different angles, has stable joint connection, can be disassembled, prolongs the service life, can adjust the flow when a medium flows, meets the requirements of different working states and improves the service performance.
In order to achieve the above object, the present invention provides a five-way joint capable of changing angles, which comprises a first pipe joint, a second pipe joint, a third pipe joint, a fourth pipe joint, a fifth pipe joint, a joint seat and a clamping device, wherein the joint seat is provided with a first connecting port, a second connecting port, a third connecting port, a fourth connecting port and a fifth connecting port, the first connecting port is connected with the first pipe joint through a bearing, the outer wall of the first pipe joint is provided with a threaded part, the right side of the threaded part is sleeved with a pulling device, the second connecting port is connected with the second pipe joint through a bearing, the upper end of the third connecting port is connected with the third pipe joint through a clamping device, the lower end of the third connecting port is connected with the third pipe joint through a thread, one side of the third pipe joint is provided with a throttling device, the upper end of the fourth connecting port is connected with the fourth pipe joint through a thread, the upper end of the fifth connecting port is connected with the fifth pipe joint through a clamping device, and the lower end of the fifth connecting port is connected with the fifth pipe joint through a thread, and the fifth pipe joint is connected with the fifth pipe joint through the same structure and the fifth pipe joint.
Preferably, a plurality of first grooves are uniformly formed in one circle of the threaded portion, the traction device comprises a traction nut, a traction rod and a lifting rod, the traction nut is sleeved on the first pipe joint, the inner diameter of the traction nut is larger than the outer diameter of the first pipe joint, a first thread is arranged on the outer wall of the traction nut, the traction rod is connected to the right side of the traction nut, a first magnet is arranged on the traction rod, the first magnet and the left end of the joint are mutually attracted, a plurality of second grooves are uniformly formed in one circle of the left side of the traction nut, sliding grooves are formed in two sides of the second grooves, a traction rod is arranged in the second grooves, two sides of the inner end of the traction rod are located in the sliding grooves, a second magnet is arranged on two sides of the upper end of the sliding groove, two sides of the inner end of the traction rod are mutually attracted with the second magnet, the lifting rod is arranged above the inner end of the traction rod, the size of the traction rod is matched with the first grooves, a plurality of second threads are arranged on the outer wall of the traction rod, and the threads of the second threads are matched with the threads of the second portion.
Preferably, the pulling nut is regular hexagon.
Preferably, the clamping device comprises a clamping ring, a first spring seat, a first spring and a clamping strip, wherein the clamping ring is a convex ring and is respectively fixed on the inner walls of a third pipe joint, a fourth pipe joint and a fifth pipe joint, an installation groove is formed in the periphery of the clamping ring, the bottom of the installation groove is provided with the first spring seat, the first spring seat is provided with the first spring, one end, close to the center of the clamping ring, of the first spring is provided with the clamping strip, the clamping strip is arc-shaped, and a sealing ring is bonded at the outer end of the clamping strip.
Preferably, the throttling device comprises a throttling screw, a throttling nut and a tightening cap, wherein one side of the third pipe joint is provided with a throttling orifice, the inner wall of the throttling orifice is provided with an internal thread, the outer wall of the throttling screw is provided with an external thread, the internal thread is matched with the external thread, one end of the throttling screw penetrates through the throttling orifice and is positioned on the inner wall of the third pipe joint, the other end of the throttling screw is connected with the throttling nut, the tightening cap is sleeved on the throttling screw and used for fixing and sealing the throttling screw, and sealing rings are arranged on two sides of the tightening cap.
Preferably, the outer diameter of the tightening cap is larger than the outer diameter of the throttle nut.
The invention has the beneficial effects that: according to the invention, the first pipe joint and the second pipe joint are connected with the joint seat through the bearing, and the connecting seat drives the third pipe joint, the fourth pipe joint and the fifth pipe joint to rotate 360 degrees, so that pipes in different directions can be connected; the third pipe joint, the fourth pipe joint and the fifth pipe joint are connected with the connecting seat through the clamping device and the threads, so that the connection is stable, the disassembly and the replacement can be realized, and the service life of the pipe joint is prolonged; by arranging the throttling device at one side of the third pipe joint, the fourth pipe joint and the fifth pipe joint, the medium flowing in the third pipe joint, the fourth pipe joint and the fifth pipe joint can be limited to flow; through set up draw gear on first coupling, make the hose more convenient cover tightly at the screw thread portion of first coupling and quick dismantlement hose, improve work efficiency.
The features and advantages of the present invention will be described in detail by way of example with reference to the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a schematic view of a five-way joint capable of changing angles according to the present invention;
FIG. 2 is a left side view of the pull nut of the present invention;
FIG. 3 is a schematic view of the structure of the connecting base of the present invention;
fig. 4 is a top view of a third connection port of the present invention;
fig. 5 is a left side view of a third connection port of the present invention.
In the figure: 1-first pipe joint, 2-second pipe joint, 3-third pipe joint, 4-fourth pipe joint, 5-fifth pipe joint, 6-joint seat, 7-clamping device, 8-second groove, 11-threaded portion, 12-pulling device, 31-throttling device, 32-throttling device, 61-first connection port, 62-second connection port, 63-third connection port, 64-fourth connection port, 65-fifth connection port, 71-clamping ring, 72-first spring seat, 73-first spring, 74-clamping bar, 81-sliding groove, 111-first groove, 121-pulling nut, 122-pulling rod, 123-pulling rod, 124-pulling rod, 125-first screw thread, 126-first magnet, 127-second screw thread, 311-throttling screw, 312-throttling nut, 313-bolting cap, 314-external screw thread, 321-internal screw thread, 711-mounting groove, 811-second magnet.
[ detailed description ] of the invention
The present invention will be further described in detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
As shown in fig. 1 to 5, the present invention provides a five-way joint capable of changing angles, comprising a first pipe joint 1, a second pipe joint 2, a third pipe joint 3, a fourth pipe joint 4, a fifth pipe joint 5, a joint seat 6 and a clamping device 7, wherein the joint seat 6 is provided with a first connecting port 61, a second connecting port 62, a third connecting port 63, a fourth connecting port 64 and a fifth connecting port 65, the first connecting port 61 is connected with the first pipe joint 1 through a bearing, the outer wall of the first pipe joint 1 is provided with a threaded part 11, the right side of the threaded part 11 is sleeved with a pulling device 12, the second connecting port 62 is connected with the second pipe joint 2 through a bearing, the upper end of the third connecting port 63 is connected with the third pipe joint 3 through the clamping device 7, the lower end of the third connecting port 63 is connected with the third pipe joint 3 through threads, one side of the third pipe joint 3 is provided with a throttling device 31, the upper end of the fourth connecting port 64 is connected with the fourth pipe joint 4 through a clamping device 7, the lower end of the fourth connecting port 64 is connected with the fourth pipe joint 4 through threads, the upper end of the fifth connecting port 65 is connected with the fifth pipe joint 5 through the clamping device 7, the lower end of the fifth connecting port 65 is connected with the fifth pipe joint 5 through threads, the internal structures of the fourth pipe joint 4, the fifth pipe joint 5 and the third pipe joint 3 are the same, a plurality of first grooves 111 are uniformly arranged on one circle of the threaded part 11, the traction device 12 comprises a traction nut 121, a traction rod 122, a traction rod 123 and a lifting rod 124, the traction nut 121 is sleeved on the first pipe joint 1, the inner diameter of the traction nut 121 is larger than the outer diameter of the first pipe joint 1, the outer wall of the traction nut 121 is provided with a first thread 125, the right side of the pulling nut 121 is connected with a pulling rod 122, the pulling rod 122 is provided with a first magnet 126, the first magnet 126 is attracted with the left end of the joint seat 6, a plurality of second grooves 8 are uniformly arranged on the periphery of the left side of the pulling nut 121, sliding grooves 81 are arranged on two sides of the second grooves 8, a pulling rod 123 is arranged in the second grooves 8, two sides of the inner end of the pulling rod 123 are positioned in the sliding grooves 81, two sides of the upper end of the sliding grooves 81 are provided with a second magnet 811, two sides of the inner end of the pulling rod 123 are attracted with the second magnet 811, a pulling rod 124 is arranged above the inner end of the pulling rod 123, the size of the pulling rod 123 is matched with that of the first grooves 111, a plurality of second threads 127 are arranged on the outer wall of the pulling rod 123, the second threads 127 are matched with the threads of the threaded parts 11, the pulling nut 121 is in a regular hexagon, the clamping device 7 comprises a clamping ring 71, a first spring seat 72, a first spring 73 and a clamping strip 74, wherein the clamping ring 71 is a convex ring which is respectively fixed on the inner walls of a third pipe joint 3, a fourth pipe joint 4 and a fifth pipe joint 5, an installation groove 711 is formed in the periphery of the clamping ring 71, the bottom of the installation groove 711 is provided with the first spring seat 72, the first spring seat 72 is provided with the first spring 73, one end of the first spring 73, which is close to the center of the clamping ring 71, is provided with the clamping strip 74, the clamping strip 74 is arc-shaped, the outer end of the clamping strip 74 is adhered with a sealing ring, the throttling device 31 comprises a throttling screw 311, a throttling nut 312 and a bolting cap 313, one side of the third pipe joint 3 is provided with a throttling orifice 32, the inner wall of the throttling orifice 32 is provided with an internal thread 321, the outer wall of the throttling screw 311 is provided with an external thread 314, the internal thread 331 is matched with the external thread 314, one end of the throttling screw 311 penetrates through the throttling hole 32 and is located on the inner wall of the third pipe joint 3, the other end of the throttling screw 311 is connected with a throttling nut 312, the tightening cap 313 is sleeved on the throttling screw 311 and used for fixing and sealing the throttling screw 311, sealing rings are arranged on two sides of the tightening cap 313, and the outer diameter of the tightening cap 313 is larger than that of the throttling nut 312.
By adopting the technical scheme, the first pipe joint 1 and the second pipe joint 2 are connected with the joint seat 6 through the bearing, and the joint seat 6 drives the third pipe joint 3, the fourth pipe joint 4 and the fifth pipe joint 5 to rotate for 360 degrees, so that pipes in different directions can be connected;
the third pipe joint 3, the fourth pipe joint 4 and the fifth pipe joint 5 are connected with the joint seat 6 through the clamping device 7 and the screw threads, so that the connection is stable, the disassembly and the replacement can be realized, and the service life of the invention is prolonged; the throttle device 31 is arranged on one side of the third pipe joint 3, the fourth pipe joint 4 and the fifth pipe joint 5, the medium flow is limited by adjusting the length of the throttle screw 311 in the pipe joints, and the medium flow is adjusted, so that the adaptability is high;
through setting up draw gear 12 on first coupling 1, the internal diameter setting of draw nut 121 is greater than the external diameter of screw portion 11 makes draw nut 121 can be quick light carry out the activity about on screw portion 11, when needs cup joint the hose at screw portion 11, at first move draw nut 121 to screw portion 11 leftmost, cup joint the hose on draw nut 121, then pull the pull rod 122 to screw portion 11's rightmost, utilize first magnet 122 and joint seat 6 to attract each other to fix a position, then lift the hose from draw nut 121, utilize pull rod 124 to drive pull rod 123 downwardly moving, to pull rod 123 card in first recess 111, make hose and screw portion 11 be connected inseparabler, when need dismantle the hose, utilize pull rod 124 to drive pull rod 123 upwards move to with second magnet 811 to attract each other to fix a position, prop up the hose junction and just can be smooth with the hose, dismantle convenient and fast.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, or alternatives falling within the spirit and principles of the invention.
Claims (4)
1. The utility model provides a five-way joint that can change angle which characterized in that: the novel high-pressure pipe joint comprises a first pipe joint (1), a second pipe joint (2), a third pipe joint (3), a fourth pipe joint (4), a fifth pipe joint (5), a joint seat (6) and a clamping device (7), wherein the joint seat (6) is provided with a first connecting port (61), a second connecting port (62), a third connecting port (63), a fourth connecting port (64) and a fifth connecting port (65), the first connecting port (61) is connected with the first pipe joint (1) through a bearing, the outer wall of the first pipe joint (1) is provided with a threaded part (11), the right side of the threaded part (11) is sleeved with a pulling device (12), the second connecting port (62) is connected with the second pipe joint (2) through a bearing, the upper end of the third connecting port (63) is connected with the third pipe joint (3) through the clamping device (7), the lower end of the third connecting port (63) is connected with the third pipe joint (3) through threads, one side of the third pipe joint (3) is provided with a throttling device (31), the upper end of the fourth connecting port (64) is connected with the fourth pipe joint (4) through the clamping device (7) through the fourth pipe joint (4), the upper end of the fifth connecting port (65) is connected with the fifth pipe joint (5) through the clamping device (7), the lower end of the fifth connecting port (65) is connected with the fifth pipe joint (5) through threads, the inner structures of the fourth pipe joint (4), the fifth pipe joint (5) and the third pipe joint (3) are the same, a plurality of first grooves (111) are uniformly arranged on one circle of the threaded portion (11), the traction device (12) comprises a traction nut (121), a traction rod (122), a traction rod (123) and a lifting rod (124), the traction nut (121) is sleeved on the first pipe joint (1), the inner diameter of the traction nut (121) is larger than the outer diameter of the first pipe joint (1), a first thread (125) is arranged on the outer wall of the traction nut (121), a traction rod (122) is connected on the right side of the traction nut (121), a plurality of first magnets (126) are uniformly arranged on the traction rod (122), a plurality of second grooves (8) are uniformly arranged on the left side of the traction nut (123) and the left side of the traction nut (6), a plurality of second grooves (8) are uniformly arranged on the left side of the traction nut (8), the utility model discloses a clamping device, including clamping ring (71), first spring holder (72), clamping strip (74), clamping ring (71) are the bulge loop, a week is equipped with mounting groove (711) in clamping ring (71), the bottom of mounting groove (711) is equipped with first spring holder (72), be equipped with first spring (73) on first spring holder (72), the outer wall of clamping rod (123) is equipped with a plurality of second screw threads (127), second screw threads (127) and screw thread assorted of screw thread portion (11), clamping device (7) are including clamping ring (71), first spring holder (72), first spring (73), clamping strip (74), clamping ring (71) are the bulge loop, a week is equipped with mounting groove (711), the bottom of mounting groove (711) is equipped with first spring holder (72), be equipped with first spring (73) on first spring holder (73) near clamping ring (71), clamping ring (74) are the clamping ring (74) have the arc.
2. A reversible five-way joint as claimed in claim 1, wherein: the traction nut (121) is in a regular hexagon shape.
3. A reversible five-way joint as claimed in claim 1, wherein: the throttling device comprises a throttling screw (311), a throttling nut (312) and a tightening cap (313), wherein a throttling orifice (32) is arranged on one side of a third pipe joint (3), an inner thread (321) is arranged on the inner wall of the throttling orifice (32), an outer thread (314) is arranged on the outer wall of the throttling screw (311), the inner thread (321) is matched with the outer thread (314), one end of the throttling screw (311) penetrates through the throttling orifice (32) and is located on the inner wall of the third pipe joint (3), the other end of the throttling screw (311) is connected with the throttling nut (312), the tightening cap (313) is sleeved on the throttling screw (311) and is used for fixing and sealing the throttling screw (311), and sealing rings are arranged on two sides of the tightening cap (313).
4. A reversible five-way joint as claimed in claim 3, wherein: the outer diameter of the tightening cap (313) is larger than the outer diameter of the throttle nut (312).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810810717.0A CN108679346B (en) | 2018-07-23 | 2018-07-23 | Five-way joint capable of changing angles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810810717.0A CN108679346B (en) | 2018-07-23 | 2018-07-23 | Five-way joint capable of changing angles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108679346A CN108679346A (en) | 2018-10-19 |
| CN108679346B true CN108679346B (en) | 2023-09-19 |
Family
ID=63814451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810810717.0A Active CN108679346B (en) | 2018-07-23 | 2018-07-23 | Five-way joint capable of changing angles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108679346B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110040867B (en) * | 2019-03-20 | 2021-10-29 | 中铁四局集团有限公司 | Engineering site sewage treatment method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07110090A (en) * | 1993-10-13 | 1995-04-25 | Akihiro Nakada | Hose clamp |
| CN201265723Y (en) * | 2008-09-01 | 2009-07-01 | 宁波东港紧固件制造有限公司 | Five-way hose coupler |
| CN204004953U (en) * | 2014-07-21 | 2014-12-10 | 温岭市海风差速器有限公司 | Air pump pipe fitting joint |
| CN205678324U (en) * | 2016-06-19 | 2016-11-09 | 詹桥生 | Can 360 degree of rotations, the tee pipe couplings with ball valve |
| CN106979427A (en) * | 2017-05-05 | 2017-07-25 | 叶炎彬 | A kind of rapid pipeline connector |
-
2018
- 2018-07-23 CN CN201810810717.0A patent/CN108679346B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07110090A (en) * | 1993-10-13 | 1995-04-25 | Akihiro Nakada | Hose clamp |
| CN201265723Y (en) * | 2008-09-01 | 2009-07-01 | 宁波东港紧固件制造有限公司 | Five-way hose coupler |
| CN204004953U (en) * | 2014-07-21 | 2014-12-10 | 温岭市海风差速器有限公司 | Air pump pipe fitting joint |
| CN205678324U (en) * | 2016-06-19 | 2016-11-09 | 詹桥生 | Can 360 degree of rotations, the tee pipe couplings with ball valve |
| CN106979427A (en) * | 2017-05-05 | 2017-07-25 | 叶炎彬 | A kind of rapid pipeline connector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108679346A (en) | 2018-10-19 |
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