CN108980497A - A kind of four-way connection of simple structure - Google Patents
A kind of four-way connection of simple structure Download PDFInfo
- Publication number
- CN108980497A CN108980497A CN201810979299.8A CN201810979299A CN108980497A CN 108980497 A CN108980497 A CN 108980497A CN 201810979299 A CN201810979299 A CN 201810979299A CN 108980497 A CN108980497 A CN 108980497A
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- China
- Prior art keywords
- main body
- slot
- connector
- matched
- way connection
- Prior art date
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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
- 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
- F16L55/24—Preventing accumulation of dirt or other matter in the pipes, e.g. by traps, by strainers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Filtration Of Liquid (AREA)
Abstract
The present invention relates to pipe fitting interconnection technique fields, and disclose a kind of four-way connection of simple structure, including main body and four connectors, main body is hollow structure, two of them connector is symmetrically fixed to be connected at the both ends of main body, other two connector is respectively symmetrically fixed to be connected in the top and bottom of main body, it is inserted in connector and the matched water pipe of connector, symmetrical sliding groove there are two being opened up on the inner wall of connector, the slot bottom of sliding groove is fixedly connected with the first spring, the other end of first spring is fixedly connected with and the matched fixture block of sliding groove, the lateral wall of water pipe corresponds to be offered and the matched card slot of fixture block at the position of fixture block, fixture block passes through the notch of sliding groove far from one end of the first spring and extends in corresponding card slot, fixture block is fixedly connected with pull rod close to the side of sliding groove slot bottom.The four-way connection of the simple structure so that the dismounting between four-way connection and pipeline is more convenient, and makes the blocking-proof result of four-way connection more preferably.
Description
Technical field
The present invention relates to pipe fitting interconnection technique field, specially a kind of four-way connection of simple structure.
Background technique
Pipe fitting is typically used as the adapter of various types of fluid systems, and as its basic configuration, pipe fitting is one small
Duan Guanzi, both ends are suitable for other components or other pipelines in connecting fluid system, and four-way connection is normal currently on the market
Pipe fitting.
In the prior art, the connection between four-way connection and pipeline is realized by being threadedly engaged sealing ring mostly, screw thread
It is fastenedly connected although connection is able to achieve, it turns screw thread and usually also needs to assist by extraneous tool, it is time-consuming and laborious, and
Screw thread turns be easy to appear sliding teeth phenomenon for a long time, to influence to connect, four-way connection is blocked in order to prevent, is usually being connect
Head is internal to be arranged strainer, and still, strainer use for a long time is easy to happen blocking, to influence the use of connector.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of four-way connection of simple structure, have it is convenient for disassembly and assembly and
The advantages that blocking-proof result is good solves in the prior art, and inconvenient and four-way connection is dismounted between four-way connection and pipeline and is easy
The problem of blocking.
(2) technical solution
To realize the above-mentioned easy to connect and good purpose of blocking-proof result, the invention provides the following technical scheme: a kind of construction
Simple four-way connection, including main body and four connectors, the main body are hollow structure, and connector described in two of them is symmetrical
At the both ends of main body, other two described connector is respectively symmetrically fixed to be connected in the top and bottom of main body, institute for fixed connection
State be inserted in connector with the matched water pipe of connector, open up that there are two symmetrical slidings on the inner wall of the connector
Slot, the slot bottom of the sliding groove are fixedly connected with the first spring, and the other end of first spring is fixedly connected with and sliding groove
Matched fixture block, the lateral wall of the water pipe correspond to offered at the position of fixture block with the matched card slot of fixture block, the fixture block is remote
One end from the first spring passes through the notch of sliding groove and extends in corresponding card slot, and the fixture block is close to sliding groove slot bottom
Side is fixedly connected with pull rod, and the slot bottom of the sliding groove corresponds to be offered and the matched slide opening of pull rod, institute at the position of pull rod
It states pull rod to sequentially pass through the first spring and slide opening far from one end of fixture block and extend on the outside of slide opening, and pull rod and slide opening sliding connect
It connecing, limiting slot is offered on the side wall of the slide opening draw-in bar, the slot bottom of the limiting slot is fixedly connected with second spring,
The other end of the second spring be fixedly connected with the matched arc-shaped limit block of limiting slot, the arc-shaped limit block is far from second
One end of spring passes through the notch of limiting slot and inner wall corresponding with slide opening offsets.
Preferably, be fixedly installed with strainer in the main body, be equipped in the main body with the matched scraper plate of strainer, it is described to scrape
The side of plate and the side of strainer offset, and the both ends of scraper plate and the inner wall of main body are slidably connected, and bull stick is equipped in the main body,
The bull stick sequentially passes through the top of scraper plate and main body far from one end of body interior lower surface and upwardly extends, and is located at the master
Screw thread is offered on the bar wall of internal bull stick, and bull stick is threadedly coupled with scraper plate, is passed through between the bull stick and the top of main body
Bearing rotation connection, and the junction of bull stick and body top is equipped with the first sealing ring.
Preferably, the pull rod is fixedly connected with drawing handle far from one end of fixture block.
Preferably, sliding slot is offered on the inner wall of the connector, and the one end of sliding slot far from main body is opening setting, institute
The lateral wall for stating water pipe corresponds to be fixedly connected at the position of sliding slot to be connected with the matched sliding block of sliding slot, the sliding block and sliding slot sliding
It connects, and sliding block offsets with sliding slot far from the side wall of opening.
Preferably, water pipe fixing sleeve on the tube wall of one end position of main body is equipped with matched second sealing ring.
Preferably, the bull stick is fixedly connected with handle far from one end of body interior lower surface.
Preferably, the lower surface of the body interior corresponds to and offers collecting tank at the position of scraper plate, the collecting tank
Slot bottom fixation is communicated with sewage pipe, and the sewage pipe is inserted with matched with sewage pipe at the nozzle position far from collecting tank one end
Sealing piston.
(3) beneficial effect
Compared with prior art, the present invention provides a kind of four-way connection of simple structure, have it is following the utility model has the advantages that
1, the four-way connection of the simple structure, by setting connector, water pipe, sliding groove, the first spring, fixture block, card slot,
Pull rod, limiting slot, second spring and arc-shaped limit block pull pull rod, card when being dismantled between water pipe and connector
Block is slided towards the slot bottom direction of sliding groove, compresses the first spring, is detached from fixture block and card slot, at this point, second in limiting slot
Spring pops up arc-shaped limit block, and the side wall of the side wall and connector that make arc-shaped limit block is inconsistent, and the first spring will not occur
It resets, pulls water pipe that can make water pipe and connector quick separating, when being installed between water pipe and connector, by water
Pipe is plugged in corresponding connector, and water pipe is pushed to slide into suitable position, pushing drawing rod, arc-shaped limit block court in connector
Limiting slot slot bottom direction sliding, enter arc-shaped limit block in slide opening, the first spring will reset at this time, make fixture block and
Corresponding card slot completes clamping, so that the dismounting between four-way connection and pipeline is more convenient.
2, the four-way connection of the simple structure, by setting main body, connector, strainer, scraper plate and bull stick, in use process
The connector for selecting corresponding strainer filtering face is water inlet end, and the impurity in water can be effectively separated by strainer, and strainer is long
Time using blocking is easy, periodically rotates bull stick, when rotating clockwise bull stick, drives the scraper plate of threaded connection along in main body
Wall upward sliding, rotates counterclockwise bull stick, drives the scraper plate of threaded connection along the inner wall slide downward of main body, scraper plate and strainer
Filtering surface offset, so that the impurity that screen surface is attached is cleared up, four-way connection is effectively prevent to block, and make
Obtain the blocking-proof result of four-way connection more preferably.
Detailed description of the invention
Fig. 1 is a kind of four-way connection structural schematic diagram of simple structure proposed by the present invention；
Fig. 2 is the partial structurtes enlarged drawing in the portion A in a kind of four-way connection Fig. 1 of simple structure proposed by the present invention；
Fig. 3 is the partial structurtes enlarged drawing in the portion B in a kind of four-way connection Fig. 2 of simple structure proposed by the present invention；
Fig. 4 is a kind of structural representation of the four-way connection main body of simple structure and scraper plate coupling part proposed by the present invention
Figure.
In figure: 1 main body, 2 connectors, 3 water pipes, 4 sliding grooves, 5 first springs, 6 fixture blocks, 7 card slots, 8 pull rods, 9 limiting slots,
10 second springs, 11 arc-shaped limit blocks, 12 strainers, 13 scraper plates, 14 bull sticks, 15 draw handle, 16 sliding slots, 17 sliding blocks, 18 handles, 19 to receive
Collect slot, 20 sewage pipes, 21 sealing pistons.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-4, a kind of four-way connection of simple structure, including main body 1 and four connectors 2 are please referred to, main body 1 is hollow
Structure, symmetrically at the both ends of main body 1, other two connector 2 is respectively symmetrically fixed to be connected to two of them connector 2 for fixed connection
In the top and bottom of main body 1, be inserted in connector 2 with the matched water pipe 3 of connector 2, offer on the inner wall of connector 2
Two symmetrical sliding grooves 4, the slot bottom of sliding groove 4 are fixedly connected with the first spring 5, and the other end of the first spring 5 is fixed to be connected
Be connected to the matched fixture block 6 of sliding groove 4, the lateral wall of water pipe 3 corresponds to be offered and the matched card of fixture block 6 at the position of fixture block 6
Slot 7, fixture block 6 pass through the notch of sliding groove 4 far from one end of the first spring 5 and extend in corresponding card slot 7, and fixture block 6 is close
The side of 4 slot bottom of sliding groove is fixedly connected with pull rod 8, and the slot bottom of sliding groove 4 corresponds to be offered and pull rod 8 at the position of pull rod 8
Matched slide opening, pull rod 8 sequentially passes through the first spring 5 and slide opening far from one end of fixture block 6 and extends on the outside of slide opening, and pull rod
8 are slidably connected with slide opening, and limiting slot 9 is offered on the side wall of slide opening draw-in bar 8, and the slot bottom of limiting slot 9 is fixedly connected with
Second spring 10, the other end of second spring 10 are fixedly connected with and the matched arc-shaped limit block 11 of limiting slot 9, arc-shaped limit block
11 one end far from second spring 10 pass through the notch of limiting slot 9 and inner wall corresponding with slide opening offsets, when water pipe 3 and connector
When being dismantled between 2, pull rod 8 is pulled, fixture block 6 is slided towards the slot bottom direction of sliding groove 4, is compressed the first spring 5, is made
Fixture block 6 and card slot 7 are detached from, at this point, the second spring 10 in limiting slot 9 pops up arc-shaped limit block 11, make arc-shaped limit block 11
Side wall and connector 2 side wall it is inconsistent, the first spring 5 will not reset, pull water pipe 3 can make water pipe 3 with connect
Water pipe 3 is plugged in corresponding connector 2 by first 2 quick separating when being installed between water pipe 3 and connector 2,
Water pipe 3 is pushed to slide into suitable position in connector 2, pushing drawing rod 8, arc-shaped limit block 11 is towards the slot bottom side of limiting slot 9
To sliding, enter arc-shaped limit block 11 in slide opening, the first spring 5 will reset at this time, make fixture block 6 and corresponding card slot 7
Clamping is completed, so that the dismounting between four-way connection and pipeline is more convenient.
It is fixedly installed with strainer 12 in main body 1, is equipped with and the matched scraper plate 13 of strainer 12, the side of scraper plate 13 in main body 1
It offsets with the side of strainer 12, and the both ends of scraper plate 13 and the inner wall of main body 1 are slidably connected, bull stick 14, bull stick is equipped in main body 1
14 one end far from 1 bottom inner surface of main body sequentially pass through the top of scraper plate 13 and main body 1 and upwardly extend, and are located in main body 1
Screw thread is offered on the bar wall of bull stick 14, and bull stick 14 is threadedly coupled with scraper plate 13, pass through between bull stick 14 and the top of main body 1
Bearing rotation connection, and the junction at 1 top of bull stick 14 and main body is equipped with the first sealing ring, and corresponding strainer is selected in use process
The connector 2 of 12 filtering surfaces is water inlet end, and the impurity in water can be effectively separated by strainer 12, and 12 long-time of strainer makes
With easy blocking, bull stick 14 is periodically rotated, when rotating clockwise bull stick 14, drives the scraper plate 13 of threaded connection along main body 1
Inner wall upward sliding rotates counterclockwise bull stick 14, drives the scraper plate 13 of threaded connection along the inner wall slide downward of main body 1, scrapes
Plate 13 and the filtering surface of strainer 12 offset, so that the impurity that 12 surface of strainer attaches be cleared up, effectively prevent four-way connection
It blocks, and makes the blocking-proof result of four-way connection more preferably.
Pull rod 8 is fixedly connected with drawing 15 far from one end of fixture block 6, facilitates and pull rod 8 is driven to slide.
Sliding slot 16 is offered on the inner wall of connector 2, and the one end of sliding slot 16 far from main body 1 is opening setting, water pipe 3
Lateral wall corresponds to be fixedly connected with and the matched sliding block 17 of sliding slot 16, sliding block 17 and the sliding of sliding slot 16 connect at the position of sliding slot 16
It connects, and sliding block 17 offsets with sliding slot 16 far from the side wall of opening, when water pipe 3 and connector 2 are attached, by the corresponding cunning of sliding block 17
The aperture position of slot 16 pushes water pipe 3, slides sliding block 17 along sliding slot 16, when the side of sliding block 17 and sliding slot 16 far from opening
When wall offsets, at this point, fixture block 6 is corresponding with 7 position of card slot on water pipe 3, so that the installation between water pipe 3 and connector 2 is fixed
Position is more convenient.
The fixing sleeve on the tube wall of 1 one end position of main body of water pipe 3 is equipped with matched second sealing ring, prevents junction from sending out
Raw leakage, guarantees leakproofness.
Bull stick 14 is fixedly connected with handle 18 far from one end of 1 bottom inner surface of main body, convenient for controlling the rotation of bull stick 14.
Lower surface inside main body 1 corresponds to and offers collecting tank 19 at the position of scraper plate 13, and the slot bottom of collecting tank 19 is fixed
It is communicated with sewage pipe 20, sewage pipe 20 is inserted with and the matched sealing of sewage pipe 20 at the nozzle position far from 19 one end of collecting tank
Piston 21 is cleared up the impurity to get off on strainer 12 and is fallen into collecting tank 19, and the sealing piston 21 in sewage pipe 20, side are periodically opened
Just the impurity in main body 1 is cleared up away.
In conclusion the four-way connection of the simple structure is pulled when being dismantled between water pipe 3 and connector 2
Pull rod 8, fixture block 6 are slided towards the slot bottom direction of sliding groove 4, compress the first spring 5, are detached from fixture block 6 and card slot 7, at this point, limit
Second spring 10 in the slot 9 of position pops up arc-shaped limit block 11, and the side wall of arc-shaped limit block 11 and the side wall of connector 2 is made to offset
Touching, the first spring 5 will not reset, and pull water pipe 3 that can make water pipe 3 and 2 quick separating of connector, when water pipe 3 with connect
When being installed between first 2, water pipe 3 is plugged in corresponding connector 2, water pipe 3 is pushed to slide into connector 2
Suitable position, pushing drawing rod 8, arc-shaped limit block 11 are slided towards the slot bottom direction of limiting slot 9, are entered arc-shaped limit block 11 and are slided
In hole, the first spring 5 will reset at this time, make fixture block 6 complete to be clamped with corresponding card slot 7, so that four-way connection and pipeline
Between dismounting it is more convenient；The connector 2 that corresponding 12 filtering surface of strainer is selected in use process is water inlet end, and the impurity in water is logical
Filter screen 12 can be effectively separated, and 12 long-time of strainer periodically rotates bull stick 14, rotate clockwise and turn using blocking is easy
It when bar 14, drives the scraper plate 13 of threaded connection along the inner wall upward sliding of main body 1, rotates counterclockwise bull stick 14, drive screw thread
The scraper plate 13 of connection is along the inner wall slide downward of main body 1, and scraper plate 13 and the filtering surface of strainer 12 offset, thus by 12 table of strainer
The impurity that face attaches is cleared up, and four-way connection is effectively prevent to block, and makes the blocking-proof result of four-way connection more preferably.
It should be noted that the terms "include", "comprise" or its any other variant are intended to the packet of nonexcludability
Contain, so that the process, method, article or equipment for including a series of elements not only includes those elements, but also including
Other elements that are not explicitly listed, or further include for elements inherent to such a process, method, article, or device.
In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element
Process, method, article or equipment in there is also other identical elements.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of four-way connection of simple structure, including main body (1) and four connectors (2), it is characterised in that: the main body
It (1) is hollow structure, connector (2) described in two of them is symmetrically fixed to be connected in the both ends of main body (1), other two described company
Respectively symmetrically fixed connection is inserted with and connector (2) connector (2) in the top and bottom of main body (1), the connector (2)
Matched water pipe (3), opens up that there are two symmetrical sliding groove (4), the sliding grooves (4) on the inner wall of the connector (2)
Slot bottom be fixedly connected with the first spring (5), the other end of first spring (5) is fixedly connected with to be matched with sliding groove (4)
Fixture block (6), the lateral wall of the water pipe (3) correspond to offered at the positions of fixture block (6) with fixture block (6) matched card slot (7),
The fixture block (6) passes through the notch of sliding groove (4) far from the one end of the first spring (5) and extends in corresponding card slot (7), institute
It states fixture block (6) to be fixedly connected with pull rod (8) close to the side of sliding groove (4) slot bottom, the slot bottom of the sliding groove (4) corresponds to pull rod
(8) it is offered at position and sequentially passes through first far from the one end of fixture block (6) with pull rod (8) matched slide opening, the pull rod (8)
Spring (5) and slide opening simultaneously extend on the outside of slide opening, and pull rod (8) is slidably connected with slide opening, is located at the slide opening draw-in bar (8)
It is offered on side wall limiting slot (9), the slot bottom of the limiting slot (9) is fixedly connected with second spring (10), the second spring
(10) the other end is fixedly connected with and limiting slot (9) matched arc-shaped limit block (11), and the arc-shaped limit block (11) is separate
One end of second spring (10) passes through the notch of limiting slot (9) and inner wall corresponding with slide opening offsets.
2. a kind of four-way connection of simple structure according to claim 1, it is characterised in that: fixed in the main body (1)
Be equipped with strainer (12), be equipped in the main body (1) with strainer (12) matched scraper plate (13), the side of the scraper plate (13) with
The side of strainer (12) offsets, and the both ends of scraper plate (13) and the inner wall of main body (1) are slidably connected, and is equipped in the main body (1)
Bull stick (14), the bull stick (14) sequentially pass through the top of scraper plate (13) and main body (1) far from one end of main body (1) bottom inner surface
Portion simultaneously upwardly extends, and is located on the bar wall of the main body (1) interior bull stick (14) and offers screw thread, and bull stick (14) and scraper plate (13)
It is threadedly coupled, is rotatablely connected between the bull stick (14) and the top of main body (1) by bearing, and bull stick (14) and main body (1)
The junction at top is equipped with the first sealing ring.
3. a kind of four-way connection of simple structure according to claim 1, it is characterised in that: the pull rod (8) is far from card
One end of block (6) is fixedly connected with drawing (15).
4. a kind of four-way connection of simple structure according to claim 1, it is characterised in that: the connector (2) it is interior
It is offered on wall sliding slot (16), and the one end of sliding slot (16) far from main body (1) is opening setting, the lateral wall of the water pipe (3)
It is fixedly connected at the position of corresponding sliding slot (16) and sliding slot (16) matched sliding block (17), the sliding block (17) and sliding slot (16)
It is slidably connected, and sliding block (17) offsets with sliding slot (16) far from the side wall of opening.
5. a kind of four-way connection of simple structure according to claim 1, it is characterised in that: the water pipe (3) is close to main
Fixing sleeve is equipped with matched second sealing ring on the tube wall of (1) one end position of body.
6. a kind of four-way connection of simple structure according to claim 2, it is characterised in that: the bull stick (14) is far from main
One end of body (1) bottom inner surface is fixedly connected with handle (18).
7. a kind of four-way connection of simple structure according to claim 2, it is characterised in that: main body (1) inside
Lower surface corresponds to be offered collecting tank (19) at the positions of scraper plate (13), and the slot bottom fixation of the collecting tank (19) is communicated with blowdown
It manages (20), the sewage pipe (20) is matched close with sewage pipe (20) far from being inserted at the nozzle position of collecting tank (19) one end
It seals piston (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810979299.8A CN108980497B (en) | 2018-08-27 | 2018-08-27 | Four-way joint with simple structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810979299.8A CN108980497B (en) | 2018-08-27 | 2018-08-27 | Four-way joint with simple structure |
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| CN108980497A true CN108980497A (en) | 2018-12-11 |
| CN108980497B CN108980497B (en) | 2020-11-03 |
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|---|---|---|---|
| CN201810979299.8A Active CN108980497B (en) | 2018-08-27 | 2018-08-27 | Four-way joint with simple structure |
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| CN109964856A (en) * | 2019-05-14 | 2019-07-05 | 戴蓓蓓 | A kind of bee raising is with taking sweet device |
| CN111649179A (en) * | 2020-04-22 | 2020-09-11 | 嘉兴宏欣汽车零部件有限公司 | Mounting joint for automobile water pipe |
| CN113339614A (en) * | 2021-05-20 | 2021-09-03 | 贾改勤 | Pressure reminding four-way pipe joint |
| IT202000019996A1 (en) * | 2020-08-11 | 2022-02-11 | Manta Ecologica S R L | SHUT-OFF DEVICE FOR WATER TREATMENT DEVICES IN PLUMBING AND/OR SANITARY INSTALLATIONS |
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| Publication number | Publication date |
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| CN108980497B (en) | 2020-11-03 |
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