CN113803546A - Fast-insertion hose connector with good sealing performance - Google Patents
Fast-insertion hose connector with good sealing performance Download PDFInfo
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- CN113803546A CN113803546A CN202110927764.5A CN202110927764A CN113803546A CN 113803546 A CN113803546 A CN 113803546A CN 202110927764 A CN202110927764 A CN 202110927764A CN 113803546 A CN113803546 A CN 113803546A
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- hose
- locking mechanism
- screw rod
- nut
- quick
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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
- F16L33/02—Hose-clips
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention discloses a hose joint with good quick-plugging sealing performance, which comprises a first hose, wherein one end of the first hose is provided with a second hose, a connecting structure is arranged between the first hose and the second hose, the outer surface of one end of the first hose is fixedly connected with the second hose through the connecting structure, the outer surface of one end of the connecting structure is provided with a first locking mechanism, the outer surface of the other end of the connecting structure is provided with a second locking mechanism, the hose joint with good quick-plugging sealing performance is provided with the connecting structure, two ends of the connecting structure are inserted into the inner walls of the first hose and the second hose, as the hoses have certain elasticity, the first hose and the second hose wrap a first convex ring and a second convex ring to increase the sealing performance, and the second locking mechanism and the first locking mechanism are arranged to further increase the mounting stability and the sealing performance, the protection mechanism who sets up increases certain intensity, prevents the fracture.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a hose connector with good quick-insertion sealing performance.
Background
The joint is a part for connecting a water pipe, and the water pipe joint can be divided into the following parts according to the using mode: the external thread end-connected water pipe joint is formed by die casting a zinc alloy material and is plated with zinc, sanded or chrome on the surface; compact structure, no air hole and high strength.
In the prior art, a chinese patent document with an authorization publication number of CN201921203661.9 describes a quick connector with good sealing performance, which is characterized in that a fixing head of the quick connector with good sealing performance is first installed on a pipeline, and a sealing tape or a sealant is simultaneously wound on an external thread of the fixing head during installation to improve the sealing performance of the device, after the fixing head of the quick connector with good sealing performance is installed and fixed, a quick connector is installed on the fixing head, and a hexagon nut B is rotated to fix the quick connector, during screwing of the hexagon nut B, a bracket at the top end of the quick connector moves upwards to jack up a cover plate on a conical block, so that the pipeline is connected, and simultaneously, the design of a second sealing gasket and the sealing rubber enables the joint to be sufficiently sealed, and when the quick connector is removed, the cover plate moves downwards under the action of a spring, and then the apron blocks up its pipeline of being connected with the fixed head, plays sealed effect, but the installation is complicated, and the structure is complicated, and the junction of hose is easy atress fracture, has certain promotion space, has brought certain adverse effect for people's use, for this reason, we provide a hose nipple that inserts sealing performance is good soon.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the hose connector with good quick-insertion sealing performance, which has the advantages of convenience for quick installation and disassembly, good sealing performance, certain protective performance, difficult fracture at a connector and the like, and can effectively solve the problems in the background art.
(II) technical scheme
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a fast hose nipple that inserts sealing performance is good, includes first hose, the one end of first hose is provided with the second hose, be provided with connection structure between first hose and the second hose, connection structure and second hose fixed connection are passed through to the one end surface of first hose, connection structure's one end surface is provided with first locking mechanism, connection structure's other end surface is provided with second locking mechanism, be provided with protection machanism between first locking mechanism and the second locking mechanism.
Preferably, the first locking mechanism and the second locking mechanism have the same structure, and the first locking mechanism is fixedly connected with the second locking mechanism through a protection mechanism.
Preferably, the connecting structure comprises a connecting pipe, a first convex ring, an oblique opening and a second convex ring, the oblique opening is located on the outer surface of the two ends of the connecting pipe, the first convex ring is fixedly installed on the outer wall of one end of the connecting pipe, and the second convex ring is fixedly installed on the outer wall of the other end of the connecting pipe.
Preferably, the connecting pipe, the first convex ring, the bevel connection and the second convex ring are all integrally formed by injection molding, the diameter of the outer wall of the connecting pipe is the same as the diameter of the inner walls of the first hose and the second hose, and the diameters of the outer walls of the first convex ring and the second convex ring are slightly larger than the diameters of the inner walls of the first hose and the second hose.
Preferably, the second locking mechanism comprises a hoop, a jack, a connecting block, a limiting groove, an installation block and a locking bolt, the connecting block is fixedly installed on the outer surface of the upper end of the hoop, the jack is arranged on the outer surface of one side of the connecting block, the limiting groove is arranged on the inner wall of the hoop, the installation block is fixedly installed on the outer surface of one end of the hoop, and the locking bolt is in threaded connection with the outer surface of one side of the installation block.
Preferably, the size of the limiting groove is slightly larger than the size of the first convex ring and the second convex ring.
Preferably, the protection mechanism includes first nut, second nut, first screw rod, sleeve and second screw rod, just first screw rod is located telescopic one end surface, the second screw rod is located telescopic other end surface, spacing groove, second nut are located the outer wall of first screw rod, second screw rod, just first nut is located one side of second nut.
Preferably, the quantity of first nut, second nut is two sets of, just the fillet of screw sets up in telescopic both ends surface, the sleeve passes through the fillet of screw and the one end outer wall threaded connection of first screw rod, second screw rod, be threaded connection between the outer wall of first nut, second nut and first screw rod, second screw rod.
Preferably, the diameter size of the outer walls of the first screw and the second screw is slightly smaller than the size of the insertion hole.
(III) advantageous effects
Compared with the prior art, the invention provides the hose connector with good quick-insertion sealing performance, and the hose connector has the following beneficial effects:
1. this kind of insert hose joint that sealing performance is good soon, when first hose and second hose are connected, the connection structure who sets up, insert first hose with connection structure's both ends, in the inner wall of second hose, because the hose has certain elasticity, wrap up first protruding circle ring and second protruding circle ring with first hose and second hose, increase the leakproofness, and the bevel connection that sets up, the resistance to water at the connecting pipe both ends has been reduced, play the effect of certain water conservancy diversion, after the installation finishes, also can be at first hose, second hose and connecting pipe junction are with further sealed with film or sealed glue.
2. This kind of insert hose coupling that sealing performance is good soon, the second locking mechanism and the first locking mechanism of setting, after connection structure is connected first hose and second hose, with the hoop cover in first locking mechanism, the second locking mechanism on its outer wall for the spacing groove card is at the outer wall of first flange ring, second flange ring, then it is fixed with its locking through rotating the locking bolt, further increases the stability and the leakproofness of installation.
3. This kind of insert hose joint that sealing performance is good soon, when first hose and second hose received when dragging, the kneck is the easiest fracture, the protection machanism of setting, through with first screw rod, the second screw rod inserts in first locking mechanism and second locking mechanism's jack, then lock it with the second nut through the first nut that sets up, make and increase certain interior relation of connection between first locking mechanism and the second locking mechanism, make when receiving the dragging, increase certain intensity, prevent the fracture, and the sleeve and the fillet of screw that set up, make protection machanism's length be convenient for adjust.
Drawings
Fig. 1 is a schematic view of the overall structure of a hose connector with a quick-insertion and good sealing performance according to the present invention.
Fig. 2 is a sectional view of a quick-insertion, high-sealability hose coupling of the present invention.
Fig. 3 is a schematic structural diagram of a connection structure in a hose connector with a good quick-insertion sealing performance according to the present invention.
Fig. 4 is a schematic structural diagram of a second locking mechanism in the hose connector with a quick-insertion and good sealing performance.
Fig. 5 is a schematic structural diagram of a protection mechanism in a hose connector with a quick-insertion and good sealing performance according to the present invention.
Fig. 6 is a schematic structural diagram of a sleeve in a hose connector with a good quick-insertion sealing performance according to the present invention.
In the figure: 1. a first hose; 2. a second hose; 3. a connecting structure; 4. a first locking mechanism; 5. a second locking mechanism; 6. a protection mechanism; 7. a connecting pipe; 8. a first collar ring; 9. a bevel opening; 10. a second collar ring; 11. a hoop; 12. a jack; 13. connecting blocks; 14. a limiting groove; 15. mounting blocks; 16. locking the bolt; 17. a first nut; 18. a second nut; 19. a first screw; 20. a sleeve; 21. a second screw; 22. and (4) a thread ring.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Detailed description of the preferred embodiment
The embodiment is a hose connector with quick insertion and good sealing performance.
As shown in fig. 1 to 6, the portable hose comprises a first hose 1, a second hose 2 is arranged at one end of the first hose 1, a connection structure 3 is arranged between the first hose 1 and the second hose 2, an outer surface of one end of the first hose 1 is fixedly connected with the second hose 2 through the connection structure 3, a first locking mechanism 4 is arranged on an outer surface of one end of the connection structure 3, a second locking mechanism 5 is arranged on an outer surface of the other end of the connection structure 3, and a protection mechanism 6 is arranged between the first locking mechanism 4 and the second locking mechanism 5.
The first locking mechanism 4 and the second locking mechanism 5 have the same structure, and the first locking mechanism 4 is fixedly connected with the second locking mechanism 5 through a protection mechanism 6; the connecting structure 3 comprises a connecting pipe 7, a first convex ring 8, an oblique opening 9 and a second convex ring 10, wherein the oblique opening 9 is positioned on the outer surfaces of two ends of the connecting pipe 7, the first convex ring 8 is fixedly arranged on the outer wall of one end of the connecting pipe 7, and the second convex ring 10 is fixedly arranged on the outer wall of the other end of the connecting pipe 7; the connecting pipe 7, the first convex ring 8, the bevel opening 9 and the second convex ring 10 are all integrally formed by injection molding, the diameter of the outer wall of the connecting pipe 7 is the same as the diameter of the inner walls of the first hose 1 and the second hose 2, and the diameters of the outer walls of the first convex ring 8 and the second convex ring 10 are slightly larger than the diameters of the inner walls of the first hose 1 and the second hose 2; the second locking mechanism 5 comprises a hoop 11, an insertion hole 12, a connecting block 13, a limiting groove 14, an installation block 15 and a locking bolt 16, wherein the connecting block 13 is fixedly installed on the outer surface of the upper end of the hoop 11, the insertion hole 12 is formed in the outer surface of one side of the connecting block 13, the limiting groove 14 is formed in the inner wall of the hoop 11, the installation block 15 is fixedly installed on the outer surface of one end of the hoop 11, and the locking bolt 16 is in threaded connection with the outer surface of one side of the installation block 15; the size of the limiting groove 14 is slightly larger than the sizes of the first convex ring 8 and the second convex ring 10; the protection mechanism 6 comprises a first screw cap 17, a second screw cap 18, a first screw rod 19, a sleeve 20 and a second screw rod 21, the first screw rod 19 is positioned on the outer surface of one end of the sleeve 20, the second screw rod 21 is positioned on the outer surface of the other end of the sleeve 20, the limiting groove 14 and the second screw cap 18 are positioned on the outer walls of the first screw rod 19 and the second screw rod 21, and the first screw cap 17 is positioned on one side of the second screw cap 18; the number of the first screw caps 17 and the second screw caps 18 is two, the thread rings 22 are arranged on the outer surfaces of two ends of the sleeve 20, the sleeve 20 is in threaded connection with the outer walls of one ends of the first screw rod 19 and the second screw rod 21 through the thread rings 22, and the first screw caps 17 and the second screw caps 18 are in threaded connection with the outer walls of the first screw rod 19 and the second screw rod 21; the diameter of the outer walls of the first screw rod 19 and the second screw rod 21 is slightly smaller than that of the insertion hole 12.
The invention is a hose joint with good quick-insertion sealing performance, when a first hose 1 is connected with a second hose 2, the connecting structure 3 is arranged, two ends of the connecting structure 3 are inserted into the inner walls of the first hose 1 and the second hose 2, the first hose 1 and the second hose 2 wrap a first convex ring 8 and a second convex ring 10 due to certain elasticity of the hoses, the sealing performance is improved, the inclined opening 9 is arranged, the resistance of two ends of a connecting pipe 7 to water is reduced, a certain diversion effect is achieved, and after the installation is finished, the connecting parts of the first hose 1, the second hose 2 and the connecting pipe 7 can be further sealed by films or sealants; the second locking mechanism 5 and the first locking mechanism 4 are arranged, after the connecting structure 3 connects the first hose 1 with the second hose 2, the hoop rings 11 in the first locking mechanism 4 and the second locking mechanism 5 are sleeved on the outer walls of the first locking mechanism and the second locking mechanism, so that the limiting grooves 14 are clamped on the outer walls of the first convex ring 8 and the second convex ring 10, and then the first locking mechanism and the second locking mechanism are locked and fixed by rotating the locking bolts 16, and the mounting stability and the sealing property are further improved; when the first hose 1 and the second hose 2 are pulled, the interface is most easily broken, the arranged protection mechanism 6 is inserted into the insertion holes 12 of the first locking mechanism 4 and the second locking mechanism 5 through the first screw rod 19 and the second screw rod 21, and then is locked through the arranged first screw cap 17 and the arranged second screw cap 18, so that a certain internal connection relation is increased between the first locking mechanism 4 and the second locking mechanism 5, certain strength is increased when the first hose 1 and the second hose 2 are pulled, breakage is prevented, and the sleeve 20 and the threaded ring 22 are arranged, so that the length of the protection mechanism 6 is convenient to adjust.
Detailed description of the invention
The embodiment is an embodiment of the connecting structure 3 in the hose connector with good quick-insertion sealing performance.
As shown in fig. 1, 2 and 3, a connection structure 3 for a hose connector with good quick-insertion sealing performance, the connection structure 3 includes a connection pipe 7, a first convex ring 8, an oblique opening 9 and a second convex ring 10, the oblique opening 9 is located on the outer surface of two ends of the connection pipe 7, the first convex ring 8 is fixedly installed on the outer wall of one end of the connection pipe 7, and the second convex ring 10 is fixedly installed on the outer wall of the other end of the connection pipe 7; the connecting pipe 7, the first convex ring 8, the bevel opening 9 and the second convex ring 10 are all integrally formed by injection molding, the diameter of the outer wall of the connecting pipe 7 is the same as the diameter of the inner walls of the first hose 1 and the second hose 2, and the diameter of the outer wall of the first convex ring 8 and the diameter of the outer wall of the second convex ring 10 are slightly larger than the diameter of the inner walls of the first hose 1 and the second hose 2.
Detailed description of the preferred embodiment
The embodiment is an embodiment of the second locking mechanism 5 in the hose connector with fast plugging and good sealing performance.
As shown in fig. 1, 2 and 4, the second locking mechanism 5 for a hose connector with good quick-insertion sealing performance comprises a hoop 11, a jack 12, a connecting block 13, a limiting groove 14, an installation block 15 and a locking bolt 16, wherein the connecting block 13 is fixedly installed on the outer surface of the upper end of the hoop 11, the jack 12 is arranged on the outer surface of one side of the connecting block 13, the limiting groove 14 is arranged on the inner wall of the hoop 11, the installation block 15 is fixedly installed on the outer surface of one end of the hoop 11, and the locking bolt 16 is in threaded connection with the outer surface of one side of the installation block 15; the size of the limiting groove 14 is slightly larger than the size of the first and second convex ring rings 8 and 10.
Detailed description of the invention
The embodiment is an embodiment of the protection mechanism 6 in the hose connector with fast plugging and good sealing performance.
As shown in fig. 1, 2, 5, and 6, a protection mechanism 6 for a hose connector with a fast plugging sealing performance includes a first nut 17, a second nut 18, a first screw 19, a sleeve 20, and a second screw 21, where the first screw 19 is located on an outer surface of one end of the sleeve 20, the second screw 21 is located on an outer surface of the other end of the sleeve 20, a limiting groove 14 and the second nut 18 are located on outer walls of the first screw 19 and the second screw 21, and the first nut 17 is located on one side of the second nut 18; the number of the first screw caps 17 and the second screw caps 18 is two, the thread rings 22 are arranged on the outer surfaces of two ends of the sleeve 20, the sleeve 20 is in threaded connection with the outer walls of one ends of the first screw rod 19 and the second screw rod 21 through the thread rings 22, and the first screw caps 17 and the second screw caps 18 are in threaded connection with the outer walls of the first screw rod 19 and the second screw rod 21; the diameter of the outer walls of the first screw rod 19 and the second screw rod 21 is slightly smaller than that of the insertion hole 12.
It is noted that, herein, relational terms such as first and second (a, b, etc.) and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides a fast insert hose nipple that sealing performance is good, includes first hose (1), its characterized in that: the one end of first hose (1) is provided with second hose (2), be provided with connection structure (3) between first hose (1) and second hose (2), the one end surface of first hose (1) passes through connection structure (3) and second hose (2) fixed connection, the one end surface of connection structure (3) is provided with first locking mechanism (4), the other end surface of connection structure (3) is provided with second locking mechanism (5), be provided with protection machanism (6) between first locking mechanism (4) and second locking mechanism (5).
2. The quick-connect, good-seal hose coupling of claim 1, wherein: the structure of the first locking mechanism (4) is the same as that of the second locking mechanism (5), and the first locking mechanism (4) is fixedly connected with the second locking mechanism (5) through a protection mechanism (6).
3. The quick-connect, good-seal hose coupling of claim 1, wherein: connection structure (3) include connecting pipe (7), first protruding circle ring (8), bevel connection (9) and second protruding circle ring (10), just bevel connection (9) are located the both ends surface of connecting pipe (7), first protruding circle ring (8) fixed mounting is in the outer wall of connecting pipe (7) one end, second protruding circle ring (10) fixed mounting is in the outer wall of connecting pipe (7) other end.
4. A quick-connect, high-seal hose coupling as claimed in claim 3, wherein: connecting pipe (7), first protruding circle ring (8), bevel connection (9) and second protruding circle ring (10) are integrative injection moulding, and the outer wall diameter of connecting pipe (7) is the same with the inner wall diameter of first hose (1), second hose (2), the outer wall diameter of first protruding circle ring (8), second protruding circle ring (10) slightly is greater than the inner wall diameter of first hose (1), second hose (2).
5. The quick-connect, good-seal hose coupling of claim 1, wherein: second locking mechanism (5) are including hoop (11), jack (12), connecting block (13), spacing groove (14), installation piece (15) and locking bolt (16), just connecting block (13) fixed mounting is in the upper end surface of hoop (11), one side surface of connecting block (13) is seted up in jack (12), the inner wall of hoop (11) is seted up in spacing groove (14), installation piece (15) fixed mounting is in the one end surface of hoop (11), locking bolt (16) threaded connection is in one side surface of installation piece (15).
6. The quick-connect, good-seal hose coupling of claim 5, wherein: the size of the limiting groove (14) is slightly larger than the size of the first convex ring (8) and the second convex ring (10).
7. The quick-connect, good-seal hose coupling of claim 1, wherein: protection machanism (6) include first nut (17), second nut (18), first screw rod (19), sleeve (20) and second screw rod (21), just first screw rod (19) are located the one end surface of sleeve (20), second screw rod (21) are located the other end surface of sleeve (20), spacing groove (14), second nut (18) are located the outer wall of first screw rod (19), second screw rod (21), just first nut (17) are located one side of second nut (18).
8. The quick-connect, good-seal hose coupling of claim 7, wherein: the quantity of first nut (17), second nut (18) is two sets of, just both ends surface in sleeve (20) is seted up in fillet of screw (22), sleeve (20) are through fillet of screw (22) and the one end outer wall threaded connection of first screw rod (19), second screw rod (21), be threaded connection between the outer wall of first nut (17), second nut (18) and first screw rod (19), second screw rod (21).
9. The quick-connect, good-seal hose coupling of claim 7, wherein: the diameter of the outer walls of the first screw rod (19) and the second screw rod (21) is slightly smaller than that of the jack (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110927764.5A CN113803546A (en) | 2021-08-13 | 2021-08-13 | Fast-insertion hose connector with good sealing performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110927764.5A CN113803546A (en) | 2021-08-13 | 2021-08-13 | Fast-insertion hose connector with good sealing performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113803546A true CN113803546A (en) | 2021-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110927764.5A Pending CN113803546A (en) | 2021-08-13 | 2021-08-13 | Fast-insertion hose connector with good sealing performance |
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| Country | Link |
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| CN (1) | CN113803546A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070000443U (en) * | 2007-03-22 | 2007-04-12 | 최의영 | One side eccentric clamping connector |
| CN110836297A (en) * | 2018-08-16 | 2020-02-25 | 中国石油化工股份有限公司 | Hose connector and collision connecting method for repairing old pipeline |
| CN210770866U (en) * | 2019-08-05 | 2020-06-16 | 湖北楚道凿岩工程有限公司 | High-pressure gas-transmission hose quick joint of rock drilling equipment |
| CN210770873U (en) * | 2019-09-20 | 2020-06-16 | 中国石油化工股份有限公司 | Flexible composite pipe joint convenient to installation |
| CN211040029U (en) * | 2019-12-17 | 2020-07-17 | 江苏凯奥机械制造有限公司 | Pipe joint connecting structure |
| CN212584461U (en) * | 2020-03-25 | 2021-02-23 | 宁波名古屋工业有限公司 | Metal connecting piece |
| CN213361435U (en) * | 2020-10-09 | 2021-06-04 | 廊坊市广阳区水利水电工程处 | Pipeline mounting structure |
-
2021
- 2021-08-13 CN CN202110927764.5A patent/CN113803546A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070000443U (en) * | 2007-03-22 | 2007-04-12 | 최의영 | One side eccentric clamping connector |
| CN110836297A (en) * | 2018-08-16 | 2020-02-25 | 中国石油化工股份有限公司 | Hose connector and collision connecting method for repairing old pipeline |
| CN210770866U (en) * | 2019-08-05 | 2020-06-16 | 湖北楚道凿岩工程有限公司 | High-pressure gas-transmission hose quick joint of rock drilling equipment |
| CN210770873U (en) * | 2019-09-20 | 2020-06-16 | 中国石油化工股份有限公司 | Flexible composite pipe joint convenient to installation |
| CN211040029U (en) * | 2019-12-17 | 2020-07-17 | 江苏凯奥机械制造有限公司 | Pipe joint connecting structure |
| CN212584461U (en) * | 2020-03-25 | 2021-02-23 | 宁波名古屋工业有限公司 | Metal connecting piece |
| CN213361435U (en) * | 2020-10-09 | 2021-06-04 | 廊坊市广阳区水利水电工程处 | Pipeline mounting structure |
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Application publication date: 20211217 |
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| RJ01 | Rejection of invention patent application after publication |