CN114001217A - Wisdom fire hose coupling - Google Patents
Wisdom fire hose coupling Download PDFInfo
- Publication number
- CN114001217A CN114001217A CN202111376183.3A CN202111376183A CN114001217A CN 114001217 A CN114001217 A CN 114001217A CN 202111376183 A CN202111376183 A CN 202111376183A CN 114001217 A CN114001217 A CN 114001217A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- pipe joint
- wall
- grooves
- circumferential direction
- 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.)
- Pending
Links
- 230000008878 coupling Effects 0.000 title claims description 27
- 238000010168 coupling process Methods 0.000 title claims description 27
- 238000005859 coupling reaction Methods 0.000 title claims description 27
- 210000001503 joint Anatomy 0.000 claims abstract description 31
- 230000009471 action Effects 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/02—Hose-clips
- F16L33/03—Self-locking elastic clips
-
- 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
- F16L33/12—Hose-clips with a pivoted or swinging tightening or securing member, e.g. toggle lever
-
- 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
- F16L33/18—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses characterised by the use of additional sealing means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention provides an intelligent fire hose pipe joint which comprises a pipe joint, wherein clamping grooves and inclined sliding grooves are formed in the outer wall, close to the butt joint end part, of the pipe joint at equal intervals along the circumferential direction, and the clamping grooves and the inclined sliding grooves are sequentially formed from the butt joint end part to the other end of the pipe joint and are communicated in a one-to-one correspondence manner; the pipe joint is connected with a first sleeve in a sliding mode, the first sleeve can slide along the length direction of the pipe joint under the action of external force, the first sleeve is connected with a second sleeve in a rotating mode, and telescopic limiting bulges are arranged on the inner wall, close to the butt joint end portion of the pipe joint, of the second sleeve at equal intervals in the circumferential direction; when the second sleeve pipe rotates relative to the first sleeve pipe, the limiting protrusions can correspond to the inclined sliding grooves and the clamping grooves one to one. The pipe joint provided by the application avoids the division of male and female pipes of the pipe joint, is convenient to butt joint, and saves precious time.
Description
Technical Field
The invention relates to the technical field of fire fighting appliances, in particular to an intelligent fire hose pipe joint.
Background
At present, in the field of fire fighting, a hose joint commonly used is a male bayonet joint and a female bayonet joint, at least 3 mounting groove holes are usually formed in the inner side wall of a female pipe joint at certain intervals, an elastic block with an arc-shaped surface is mounted in each mounting groove hole, the elastic block is connected in each mounting groove hole through a spring, when the elastic block is not under pressure, the elastic block protrudes out of the inner side wall for a certain distance under the support and balance of the spring, and when the elastic block is under pressure, the elastic block is elastically pressed to retract into the inner side wall; be provided with the round draw-in groove on public union coupling, when using, the butt joint of public female coupling, the arcwall face of elasticity piece makes the elasticity piece receive pressure and inwards withdraws under public union coupling's butt joint is crowded, when elasticity piece withdrawal to a certain distance, the hindrance entering draw-in groove of elasticity piece through public union coupling, the elasticity piece also because the inward pressure that receives disappears and restore original position card in the draw-in groove under the spring-loaded of spring, makes public female union coupling combine together. In order to prevent water from flowing out of the butt joint gap after the pipe joints are butted, a sealing ring is arranged on the end face of each pipe joint for sealing after butting. The pipe joint has simple structure, but has certain defects: because fire control generally executes emergency tasks, sometimes, due to time urgency, the male pipe joint and the female pipe joint are prepared into the male pipe joint or the female pipe joint, and precious time cannot be wasted when the male pipe joint or the female pipe joint is used; moreover, since the scores of the male and female are different, the male and female need to be distinguished first to be butted when the task is executed, and the rescue time is wasted.
Disclosure of Invention
The invention aims to provide an intelligent fire hose pipe joint to solve the problems in the background technology.
The invention is realized by the following technical scheme:
the invention provides a smart fire hose pipe joint which comprises a pipe joint, wherein clamping grooves and inclined sliding grooves are formed in the outer wall, close to the butt joint end part, of the pipe joint at equal intervals along the circumferential direction, and the clamping grooves and the inclined sliding grooves are sequentially formed from the butt joint end part to the other end of the pipe joint and are communicated in a one-to-one correspondence manner;
the pipe joint is connected with a first sleeve in a sliding mode, the first sleeve can slide along the length direction of the pipe joint under the action of external force, the first sleeve is connected with a second sleeve in a rotating mode, and telescopic limiting bulges are arranged on the inner wall, close to the butt joint end portion of the pipe joint, of the second sleeve at equal intervals in the circumferential direction;
when the second sleeve pipe rotates relative to the first sleeve pipe, the limiting protrusions can correspond to the inclined sliding grooves and the clamping grooves one to one.
Preferably, horizontal sliding grooves are formed in the outer wall of the pipe joint at equal intervals along the circumferential direction, and extend along the length direction of the pipe joint;
the inner wall of the first sleeve is fixed with sliding blocks at equal intervals along the circumferential direction, the sliding blocks are assembled in the horizontal sliding groove in a one-to-one correspondence mode, springs are fixed to two ends of each sliding block respectively, and free end portions of the springs are correspondingly and fixedly connected with the inner wall of the end portion of the horizontal sliding groove.
Preferably, the horizontal sliding groove and the inclined sliding groove are staggered, and the inclined sliding groove is located between the horizontal sliding groove and the clamping groove.
Preferably, the outer wall of the first sleeve is provided with rotary grooves at equal intervals along the circumferential direction;
and the inner wall of the second sleeve is fixed with rotary rings at equal intervals along the circumferential direction, and the rotary rings are in one-to-one corresponding limiting assembly in the rotary grooves.
Preferably, two ends of the second sleeve correspondingly extend out of two ends of the first sleeve, the inner walls of the second sleeve close to the two ends are respectively and fixedly connected with limiting convex rings along the circumferential direction, and the first sleeve is positioned between the two limiting convex rings.
Preferably, the inner wall of the limiting convex ring close to the butt joint end part of the pipe joint is provided with mounting grooves at equal intervals along the circumferential direction, and the limiting bulges are slidably mounted in the mounting grooves in a one-to-one correspondence manner and are fixedly connected with the inside of the mounting grooves through compression springs.
Preferably, the free end part of the limiting bulge is exposed outside the mounting groove and is arranged in a hemispherical shape, and the clamping groove is of a hemispherical groove structure matched with the free end part of the limiting bulge.
Preferably, the butt end of the pipe joint is provided with a sealing ring.
Compared with the prior art, the invention has the beneficial effects that: the pipe joint provided by the application avoids the division of male and female pipes of the pipe joint, is convenient to butt joint, and saves precious time.
Drawings
Fig. 1 is a schematic cross-sectional view of a smart fire hose coupling according to an embodiment of the present invention.
In the figure: 1-pipe joint; 2-a card slot; 3-inclined chutes; 4-a first sleeve; 5-a second sleeve; 6-limiting bulges; 7-horizontal chute; 8-a slide block; 9-a spring; 10-turning a groove; 11-swivel; 12-a limit convex ring; 13-mounting grooves; 14-a compression spring; 15-sealing ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic cross-sectional view of a joint of an intelligent fire hose according to an embodiment of the present invention.
The embodiment of the invention provides a smart fire hose pipe joint, as shown in fig. 1, the smart fire hose pipe joint comprises a pipe joint 1, clamping grooves 2 and inclined sliding grooves 3 are circumferentially arranged on the outer wall, close to the butt joint end portion of the pipe joint 1, of the pipe joint at equal intervals, and the clamping grooves 2 and the inclined sliding grooves 3 are sequentially formed from the butt joint end portion of the pipe joint 1 to the other end portion of the pipe joint and are communicated in a one-to-one correspondence manner.
In addition, sliding connection has first sleeve 4 on coupling 1, and first sleeve 4 can slide along coupling 1 length direction under the exogenic action to rotate on the first sleeve 4 and be connected with second sleeve 5, the equal interval along circumference is provided with the spacing arch 6 of telescopic on the inner wall that second sleeve 5 is close to coupling 1 butt joint tip.
In the embodiment of the present application, when the second sleeve 5 rotates relative to the first sleeve 4, the limiting protrusions 6 may correspond to the inclined chutes 3 and the slots 2 one by one.
When the pipe joint is specifically arranged, the outer wall of the pipe joint 1 is provided with horizontal sliding grooves 7 at equal intervals along the circumferential direction, and the horizontal sliding grooves 7 extend along the length direction of the pipe joint 1. The inner wall of the first sleeve 4 is fixed with sliding blocks 8 at equal intervals along the circumferential direction, the sliding blocks 8 are assembled in the horizontal sliding groove 7 in a one-to-one correspondence manner, springs 9 are respectively fixed at two ends of each sliding block 8, and the free end portions of the springs 9 are correspondingly and fixedly connected with the inner wall of the end portion of the horizontal sliding groove 7.
Through the arrangement, the first sleeve 4 can slide along the length direction of the pipe joint 1 under the action of external force, the first sleeve 4 slides relative to the pipe joint 1 through the sliding block 8 and the horizontal sliding groove 7, and as shown in fig. 1, the horizontal sliding groove 7 is closed, so that the first sleeve 4 cannot slip off from the pipe joint 1.
Preferably, the horizontal sliding groove 7 is staggered with the inclined sliding groove 3, and the inclined sliding groove 3 is located between the horizontal sliding groove 7 and the clamping groove 2. The inclined sliding groove 3 is communicated with the clamping groove 2, and particularly, an integral groove structure formed by the communication of the inclined sliding groove 3 and the clamping groove 2 extends along the length direction of the pipe joint 1.
Continuing to refer to fig. 1, the outer wall of the first sleeve 4 is provided with rotary slots 10 at equal intervals along the circumferential direction, the rotary slots 10 are annular grooves formed around the outer wall of the first sleeve 4, the inner wall of the second sleeve 5 is fixed with rotary rings 11 at equal intervals along the circumferential direction, and the rotary rings 11 are in one-to-one corresponding limiting assembly in the rotary slots 10. This achieves that the second sleeve 5 is rotated relative to the first sleeve 4 without being disengaged from the first sleeve 4.
Preferably, two ends of the second sleeve 5 correspondingly extend out of two ends of the first sleeve 4, the inner walls of the second sleeve 5 close to the two ends are respectively and fixedly connected with limiting convex rings 12 along the circumferential direction, and the first sleeve 4 is limited between the two limiting convex rings 12. The first sleeve 4 is driven to slide by the second sleeve 5.
In the embodiment of the application, the inner wall of the limiting convex ring 12 close to the butt joint end part of the pipe joint 1 is provided with mounting grooves 13 at equal intervals along the circumferential direction, and the limiting bulges 6 are slidably mounted in the mounting grooves 13 in a one-to-one correspondence manner and are fixedly connected with the inside of the mounting grooves 13 through compression springs 14. The mounting groove 13 is arranged perpendicular to the outer wall of the pipe joint 1, and the limiting bulge 6 extends and retracts up and down under the action of the compression spring 14 in the state shown in figure 1.
In a specific embodiment, the free end of the limiting protrusion 6 is exposed outside the mounting groove 13 and is arranged in a hemispherical shape, and the clamping groove 2 is in a hemispherical groove structure matched with the free end of the limiting protrusion 6.
In addition, the abutting end of the pipe joint 1 is provided with a seal ring 15. Specifically, the seal ring 15 is fitted to the end face of the butt end portion of the pipe joint 1, and when two pipe joints 1 are used for butt joint, the sealing performance of the butt joint of the two pipe joints 1 is achieved.
When in use, the butt joint end parts of the two pipe joints 1 are aligned, so that the second sleeve 5 on one pipe joint 1 drives the first sleeve 4 to slide towards the other pipe joint 1, wherein the pipe joint 1 moved by the second sleeve 5 is considered as a first pipe joint, and the other pipe joint 1 is considered as a second pipe joint; in addition, it should be noted that, the free end of the limiting protrusion 6 on the moving second sleeve 5 is pressed against the outer wall of the first pipe joint before moving, and in the moving process, once the limiting protrusion 6 is clamped into the clamping groove 2 on the first pipe joint, the second sleeve 5 can be moved in the direction away from the second pipe joint, so that the limiting protrusion 6 exits from the clamping groove 2 through the inclined sliding groove 3, and the limiting protrusion 6 is pressed against the outer wall of the first pipe joint again; at the moment, the limiting bulge 6 on the second sleeve 5 can be pressed on the outer wall of the second pipe joint only by rotating the second sleeve 5 to enable the limiting bulge 6 on the second sleeve 5 to be staggered with the clamping groove 2 on the outer wall of the first pipe joint, the limiting bulge 6 of the second sleeve 5 on the first pipe joint is correspondingly clamped into the clamping groove 2 on the outer wall of the second pipe joint along with the rotation of the second sleeve 5 on the first pipe joint, at the moment, the second sleeve 5 on the first pipe joint is mutually butted with the second sleeve 5 on the second pipe joint, meanwhile, the second sleeve 5 on the second pipe joint slides a distance in the direction far away from the first pipe joint to avoid the space of the second sleeve 5 on the first pipe joint until the limiting bulge 6 of the second sleeve 5 on the first pipe joint is correspondingly clamped into the clamping groove 2 on the outer wall of the second pipe joint, and the second sleeve 5 on the first pipe joint is mutually butted with the second sleeve 5 on the second pipe joint, the butt joint work of the two pipe joints 1 is completed, the whole process is simple to operate, and the butt joint of the two pipe joints 1 can be easily realized only by rotating and moving the second sleeve 5; when needing to dismantle, only need make second sleeve pipe 5 on the first coupling and the second sleeve pipe 5 on the second coupling remove to the direction of keeping away from first coupling simultaneously, make the spacing arch 6 of second sleeve pipe 5 on the first coupling withdraw from draw-in groove 2 on its outer wall through slope spout 3 on the second coupling outer wall, and rotate second sleeve pipe 5 on the first coupling, when making spacing arch 6 of second sleeve pipe 5 on the first coupling and draw-in groove 2 position on the second coupling outer wall stagger mutually, can realize dismantling two couplings 1.
Compared with the prior art, the invention has the beneficial effects that: the pipe joint provided by the application avoids the division of male and female pipes of the pipe joint, is convenient to butt joint, and saves precious time.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A smart fire hose coupling comprising: the pipe joint is characterized in that clamping grooves and inclined sliding grooves are formed in the outer wall, close to the butt joint end portion, of the pipe joint at equal intervals along the circumferential direction, and the clamping grooves and the inclined sliding grooves are sequentially formed from the butt joint end portion to the other end of the pipe joint and are communicated in a one-to-one correspondence mode;
the pipe joint is connected with a first sleeve in a sliding mode, the first sleeve can slide along the length direction of the pipe joint under the action of external force, the first sleeve is connected with a second sleeve in a rotating mode, and telescopic limiting bulges are arranged on the inner wall, close to the butt joint end portion of the pipe joint, of the second sleeve at equal intervals in the circumferential direction;
when the second sleeve pipe rotates relative to the first sleeve pipe, the limiting protrusions can correspond to the inclined sliding grooves and the clamping grooves one to one.
2. The intelligent fire hose pipe joint according to claim 1, wherein horizontal sliding grooves are formed in the outer wall of the pipe joint at equal intervals in the circumferential direction, and extend in the length direction of the pipe joint;
the inner wall of the first sleeve is fixed with sliding blocks at equal intervals along the circumferential direction, the sliding blocks are assembled in the horizontal sliding groove in a one-to-one correspondence mode, springs are fixed to two ends of each sliding block respectively, and free end portions of the springs are correspondingly and fixedly connected with the inner wall of the end portion of the horizontal sliding groove.
3. The intelligent fire hose coupling of claim 2, wherein the horizontal runner is offset from the inclined runner, the inclined runner being located between the horizontal runner and the clamping groove.
4. The intelligent fire hose coupling according to claim 1, wherein the outer wall of the first sleeve is provided with rotary grooves at equal intervals in the circumferential direction;
and the inner wall of the second sleeve is fixed with rotary rings at equal intervals along the circumferential direction, and the rotary rings are in one-to-one corresponding limiting assembly in the rotary grooves.
5. The intelligent fire hose coupling according to claim 4, wherein two ends of the second sleeve extend out of two ends of the first sleeve, the inner walls of the second sleeve near the two ends are fixedly connected with limiting convex rings along the circumferential direction, and the first sleeve is located between the two limiting convex rings.
6. The intelligent fire hose pipe joint according to claim 5, wherein mounting grooves are formed in the inner wall of the limiting convex ring close to the butt end portion of the pipe joint at equal intervals in the circumferential direction, and the limiting protrusions are slidably mounted in the mounting grooves in a one-to-one correspondence manner and fixedly connected with the inside of the mounting grooves through compression springs.
7. The intelligent fire hose coupling according to claim 6, wherein the free end of the limiting protrusion is exposed outside the mounting groove and is arranged in a hemispherical shape, and the clamping groove is of a hemispherical groove structure matched with the free end of the limiting protrusion.
8. The intelligent fire hose coupling according to any one of claims 1 to 7, wherein the butt end of the coupling is provided with a sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111376183.3A CN114001217A (en) | 2021-11-19 | 2021-11-19 | Wisdom fire hose coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111376183.3A CN114001217A (en) | 2021-11-19 | 2021-11-19 | Wisdom fire hose coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114001217A true CN114001217A (en) | 2022-02-01 |
Family
ID=79929599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111376183.3A Pending CN114001217A (en) | 2021-11-19 | 2021-11-19 | Wisdom fire hose coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114001217A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10202349A1 (en) * | 2002-01-23 | 2003-08-07 | Werner Rogg | Coupling attached to nipple to allow filling or bleeding of hydraulic system contains sealing ring which engages with tip of nipple which is locked in position by spring-loaded lever |
| CN101629662A (en) * | 2009-07-28 | 2010-01-20 | 吴良江 | Fire hose pipe joint |
| CN106439327A (en) * | 2016-08-26 | 2017-02-22 | 苏州市金江消防装备有限公司 | Novel fire-fighting hose pipe joint |
| CN206191128U (en) * | 2016-11-28 | 2017-05-24 | 马鞍山市天睿实业有限公司 | Fire hose buckle |
| CN112096989A (en) * | 2020-09-12 | 2020-12-18 | 王卫东 | Novel high-effect fire hose interface |
-
2021
- 2021-11-19 CN CN202111376183.3A patent/CN114001217A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10202349A1 (en) * | 2002-01-23 | 2003-08-07 | Werner Rogg | Coupling attached to nipple to allow filling or bleeding of hydraulic system contains sealing ring which engages with tip of nipple which is locked in position by spring-loaded lever |
| CN101629662A (en) * | 2009-07-28 | 2010-01-20 | 吴良江 | Fire hose pipe joint |
| CN106439327A (en) * | 2016-08-26 | 2017-02-22 | 苏州市金江消防装备有限公司 | Novel fire-fighting hose pipe joint |
| CN206191128U (en) * | 2016-11-28 | 2017-05-24 | 马鞍山市天睿实业有限公司 | Fire hose buckle |
| CN112096989A (en) * | 2020-09-12 | 2020-12-18 | 王卫东 | Novel high-effect fire hose interface |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2440452A (en) | Quick action coupling | |
| CN101244300A (en) | Bayonet luer lock connection for an insulin pump | |
| US20140167410A1 (en) | Connector for fluid lines | |
| CN105937677A (en) | Totally-closed maintenance-free threaded fitting | |
| CN207094002U (en) | Dismountable Quick Connect Kit | |
| CN205136881U (en) | Fluid pipeline quick connector | |
| CN104006246A (en) | Minor-caliber rapid connection pipeline joint | |
| CN114001217A (en) | Wisdom fire hose coupling | |
| CA2988929A1 (en) | System, method and apparatus for expansion coupling for pipes | |
| KR100881351B1 (en) | Expanding pipe with separation prevention structure | |
| CN203880290U (en) | Small-caliber quick pipeline connecting connector | |
| US2933334A (en) | Self-sealing pipe coupling | |
| CN205639980U (en) | Last male joint of high pressure cleaner and female joint connection structure | |
| CN109237791A (en) | A kind of water outlet connector and the connection structure comprising it | |
| CN210716469U (en) | Quick connector | |
| CN209444951U (en) | A kind of pipeline banjo fixing butt jointing | |
| CN202100866U (en) | Quick connector for pipelines | |
| CN208605785U (en) | A kind of pipe fitting quick connection structure | |
| CN204512745U (en) | Joint and clinging type pipe joint | |
| CN216009926U (en) | Buckle formula sleeve pipe connection spare | |
| JP4690042B2 (en) | Symmetric hose fitting | |
| CN213512575U (en) | Quick plug connector structure | |
| CN212672652U (en) | Pipe joint | |
| CN205716107U (en) | A kind of water purifier socket joint type depotition cock structure | |
| CN205504267U (en) | Novel pipeline joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220201 |