CN109114332A - A kind of pipeline connection device for capableing of Fast Installation based on pressure principle - Google Patents
A kind of pipeline connection device for capableing of Fast Installation based on pressure principle Download PDFInfo
- Publication number
- CN109114332A CN109114332A CN201811044149.4A CN201811044149A CN109114332A CN 109114332 A CN109114332 A CN 109114332A CN 201811044149 A CN201811044149 A CN 201811044149A CN 109114332 A CN109114332 A CN 109114332A
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- China
- Prior art keywords
- hoop
- pipe
- upper hoop
- capableing
- spring
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Classifications
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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
- F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
Abstract
The invention discloses a kind of pipeline connection devices for capableing of Fast Installation based on pressure principle, its structure includes first pipe, pipe jointer, second pipe, it is characterized by: being linked together between first pipe and second pipe by pipe jointer, pipe jointer includes cover board, upper hoop, lower hoop, compared with prior art, the beneficial effects of the present invention are: liquid pressure changes and based on magnetic homopolar-repulsion principle in hoop in utilization, so that fixed plate rapidly enters U-type groove and carries out buckling state, it fastens fastness height and this device does not use bolt and nut, save installation cost, also bolt and nut need not be rotated one by one, there are no can must quickly be installed by external tool, installation effectiveness need not be also being substantially increased while more manpower, shorten the set-up time, and it needs to repair in pipeline When can quickly be dismantled, effectively water source can be avoided to be lost.
Description
Technical field
The present invention relates to water supply pipe technical fields, specifically a kind of to be capable of Fast Installation based on pressure principle
Pipeline connection device.
Background technique
Pipeline is the device for conveying gas, liquid or the fluid with solid particle.
Waterworks needs more liquid conducting pipes, and liquid conducting pipes need to be spliced mostly, i.e.,
It is linked together between two adjacent pipelines by cohesive component, and pipeline cohesive component mostly uses greatly flange, using flange
Connection needs respectively to be fixed on a ring flange on two adjacent pipelines, and flange is then added between two ring flanges
Pad, is finally tensed two ring flanges with four or more bolts, nut, this connection type needs to install bolt one by one,
It rotates bolt and nut and also needs nut tightening by external tool, and the pipeline of waterworks is so much, such as uses this
Then rather cumbersome and installation effectiveness is low for operation, needs a large amount of manpower powerless, increases the set-up time, and conveyed for a long time
It is difficult to avoid in journey to cause piping failure because of pipeline aging and under the shock of waterpower due to, to need to repair pipeline
When art, and demounting bolt one by one is needed, because bolt and nut is more so that dismounting speed is slow, cannot be repaired in time,
Water source is caused to be largely lost.
Summary of the invention
It is a primary object of the present invention to overcome the deficiencies of the prior art and provide one kind can quickly pacify based on pressure principle
The pipeline connection device of dress.
The present invention adopts the following technical scheme that realize: a kind of novel pipeline company for capableing of Fast Installation based on pressure principle
Connection device, structure include first pipe, pipe jointer, second pipe, it is characterised in that: the first pipe and the second pipe
Linked together between road by pipe jointer, the pipe jointer include cover board, it is upper hoop, lower hoop, the upper hoop
Both ends bottom constitutes a circular configuration through lower hoop and the two fitting contact, the bottom surface of the upper hoop and the top surface of lower hoop,
The top slide of the upper hoop is connected with cover board, and the outer surface of the outer surface of the cover board and upper hoop is in tangent setting, it is described on
Hoop, lower hoop are connected with first pipe with second pipe.
As optimization, the cover board includes lid, sliding slot, and the arc-shaped structure setting in the top surface of the lid, bottom surface is in
Horizontal plane setting, two outsides of the lid and closer to the sliding slot for offering concave structure on the position of top surface, the lid,
Sliding slot is connected with upper hoop.
As optimization, the upper hoop includes gib block, groove, O-ring seal, liquid pressing group, upper gasket, arc
Plate, upper hoop, cavity, push-and-pull group, fixed plate, through slot, open up at the top of the upper hoop it is fluted, the groove two in
Wall is provided with the gib block being integrated with upper hoop, and it is integrated that the bottom surface of the groove, which offers upper hoop,
Through-hole, through-hole are laid there are three in equidistant formula and are respectively and fixedly provided with O-ring seal, and the O-ring seal is connect with liquid pressing group,
The liquid pressing group is also attached to upper hoop, and cavity is offered in the upper hoop, and the cavity is built-in with water and push-and-pull group,
The push-and-pull group is equipped with six groups and is symmetrically laid in the both ends of cavity in three or three, and the outside of push-and-pull group is connect with fixed plate, institute
Fixed plate to be stated to be provided with two pieces and be located at the through slot in two outsides of upper hoop, the bottom surface of the upper hoop is fixed with arc panel,
The upper gasket of arcuate structure is connected on the arc panel.
As optimization, the liquid pressing group includes T-type pressing lever, the first spring, pressing plate, the T-type pressing lever
Through O-ring seal and it is vertical with the bottom center of pressing plate connect, one end of the bottom surface of the pressing plate and the first spring
It is connected, the other end of first spring is connected to upper hoop inner arc end face, and the pressing plate and the first spring are respectively positioned on sky
It is intracavitary.
As optimization, the push-and-pull group includes piston, second spring, hollow, limited block, and the piston is set to hollow
In cylinder and the two is connected by sealing ring, and the hollow is fixed with limited block, second bullet far from one end of second spring
One end of spring is connected with piston, and the other end of the second spring is connected to the inner arc end face of upper hoop, and the piston is separate
One end of second spring is connected to fixed plate.
As optimization, the lower hoop includes inside groove, U-type groove, lower hoop, lower seal pad, on the top surface of the lower hoop
It is fixed with the lower seal pad of arcuate structure, the both ends of the lower hoop, which are recessed, inside groove, and the inside groove is connected with U-type groove,
Inwardly, the position of the U-type groove and the position of fixed plate are corresponding for the opening of the U-type groove, the lower seal pad and upper sealing
Pad constitutes a circular configuration.
As optimization, the T-type pressing lever is isolation material and is embedded with the permanent magnetism piece of the pole N outwardly among it.
As optimization, the lid is also isolation material and bottom surface is also embedded with the permanent magnetic strip of the pole N outwardly.
As optimization, the upper hoop can be through the U being gap-matched therewith through inside groove, the fixed plate
The width of type groove and U-type groove is slightly larger than the width of fixed plate.
As optimization, the lid is set to groove and sliding slot is slidably connected with gib block, and the T-type pressing lever, which is located at, leads
To item lower section and type pressing lever top surface and gib block between there are gaps.
Working principle: the lower seal pad of lower hoop is fitted in the bottom surface between first pipe and second pipe, under upper hoop
Gasket, the top surface being placed between first pipe and second pipe, by the sliding slot of lid gib block guiding role underthrust
Enter groove, the permanent magnetic strip of the pole of lid bottom surface outwardly is based on magnetic homopolar-repulsion principle, so that the permanent magnetism piece of pole outwardly is to pole
Permanent magnetic strip outwardly generates repulsion, so that T-type pressing lever drives pressing plate to cavity internal pressure, i.e., the area in cavity becomes
Small, pressure becomes larger, and biggish pressure makes the water snap action in cavity in piston, so that piston driving fixed plate is to hollow
It is overhanging until limited by limited block so that fixed plate, which rapidly enters U-type groove, carries out fastening state.
Beneficial effect
Compared with prior art, the beneficial effects of the present invention are: the pipeline connection devices to utilize liquid in upper hoop
Pressure change and based on magnetic homopolar-repulsion principle, as long as lower hoop is fitted in pipeline bottom surface, under upper hoop is inserted into from pipeline
Cover board, is inserted into the top surface bound round by hoop, by liquid pressing group so that the area of upper hoop inner cavity becomes smaller, then according to Pascal's law
Pressure can be obtained to become larger, pressure becomes larger to act on push-and-pull group, so that fixed plate rapidly enters U-type groove and carries out buckling state, button
It closes fastness height and this device does not use bolt and nut, save installation cost, need not also rotate one by one bolt and nut, more
It can need not quickly be installed by external tool, need not also substantially increase installation effectiveness while more manpower,
The set-up time is shortened, and can quickly be dismantled when pipeline needs to repair, effectively water source can be avoided to be lost.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is a kind of structural representation for the pipeline connection device for capableing of Fast Installation based on pressure principle of the present invention
Figure.
Fig. 2 is the structural schematic diagram of the side view of pipe jointer of the invention.
Fig. 3 is the structural schematic diagram of the upper fastening state bound round in Fig. 2.
Fig. 4 is the lower structural schematic diagram bound round in Fig. 2.
Fig. 5 is the structural schematic diagram of the enlarged drawing of A in Fig. 3.
Fig. 6 is the structural schematic diagram of the top view of the non-fastening state of Fig. 3.
Fig. 7 is the structural schematic diagram of the top view of Fig. 3.
In figure: first pipe -1, pipe jointer -2, second pipe -3, cover board -21, upper hoop -22, lower hoop -23, lid -
21a, sliding slot -21b, gib block -22a, groove -22b, O-ring seal -22c, liquid pressing group -22d, upper gasket -22e, arc
Shape plate -22f, upper hoop -22g, cavity -22h, push-and-pull group -22i, fixed plate -22j, through slot -22k, T-type pressing lever -22d1,
One spring -22d2, pressing plate -22d3, piston -22i1, second spring -22i2, hollow -22i3, limited block -22i4, inside groove -
Permanent magnetism piece -22d4, the permanent magnetic strip-of the pole N outwardly of 23a, U-type groove -23b, lower hoop -23c, lower seal pad -23d, the pole N outwardly
21c。
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.
In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more；Term " on ",
The orientation or positional relationship of the instructions such as "lower", "left", "right", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings,
Be merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
Fig. 1-7 is please referred to, the present invention provides a kind of pipeline connection device for capableing of Fast Installation based on pressure principle
Technical solution: its structure includes first pipe 1, pipe jointer 2, second pipe 3, the first pipe 1 and second pipe 3 it
Between linked together by pipe jointer 2, the pipe jointer 2 includes cover board 21, upper hoop 22, lower hoop 23, described
The both ends bottom of upper hoop 22 is constituted through lower hoop 23 and the two fitting contact, the bottom surface of the upper hoop 22 and the top surface of lower hoop 23
One circular configuration, the top slide of the upper hoop 22 are connected with cover board 21, and the outer surface of the cover board 21 is outer with upper hoop 22
Surface is in tangent setting, and the upper hoop 22, lower hoop 23 are connected with first pipe 1 with second pipe 3.
The cover board 21 includes the arc-shaped structure setting in top surface of lid 21a, sliding slot 21b, the lid 21a, bottom surface
It is arranged in horizontal plane, two outsides of the lid 21a and closer to the sliding slot 21b for offering concave structure on the position of top surface,
The lid 21a, sliding slot 21b are connect with upper hoop 22.
The upper hoop 22 includes gib block 22a, groove 22b, O-ring seal 22c, liquid pressing group 22d, upper gasket
22e, arc panel 22f, upper hoop 22g, cavity 22h, push-and-pull group 22i, fixed plate 22j, through slot 22k, the top of the upper hoop 22g
Portion opens up fluted 22b, and two inner walls at the groove 22b are provided with the gib block being integrated with upper hoop 22g
22a, the bottom surface of the groove 22b offer upper hoop 22g be integration through-hole, through-hole in equidistant formula lay there are three and
It is respectively and fixedly provided with O-ring seal 22c, the O-ring seal 22c is connect with liquid pressing group 22d, and the liquid pressing group 22d is also
It is connected to upper hoop 22g, cavity 22h is offered in the upper hoop 22g, the cavity 22h is built-in with water and push-and-pull group 22i,
The push-and-pull group 22i is equipped with six groups and is symmetrically laid in the both ends of cavity 22h in three or three, the outside of push-and-pull group 22i with fixation
Plate 22j connection, the fixed plate 22j are provided with two pieces and at the through slot 22k in two outsides of upper hoop 22g, the upper hoop
The bottom surface of body 22g is fixed with arc panel 22f, and the upper gasket 22e of arcuate structure is connected on the arc panel 22f.
The liquid pressing group 22d includes T-type pressing lever 22d1, the first spring 22d2, pressing plate 22d3, the T-type
Pressing lever 22d1 through O-ring seal 22c and it is vertical with the bottom center of pressing plate 22d3 connect, the pressing plate 22d3's
Bottom surface is connected with one end of the first spring 22d2, and the other end of the first spring 22d2 is connected to upper hoop 22g inner arc end
Face, the pressing plate 22d3 and the first spring 22d2 are respectively positioned in cavity 22h.
The push-and-pull group 22i includes piston 22i1, second spring 22i2, hollow 22i3, limited block 22i4, the work
Fill in 22i1 be set to hollow 22i3 in and the two by sealing ring connection, the hollow 22i3 far from second spring 22i2 one
End is fixed with limited block 22i4, and one end of the second spring 22i2 is connected with piston 22i1, the second spring 22i2's
The other end is connected to the inner arc end face of upper hoop 22g, and the piston 22i1 is connected to fixation far from one end of second spring 22i2
Plate 22j.
The lower hoop 23 includes inside groove 23a, U-type groove 23b, lower hoop 23c, lower seal pad 23d, the lower hoop 23c
Top surface on be fixed with the lower seal pad 23d of arcuate structure, the both ends of the lower hoop 23c, which are recessed, inside groove 23a, it is described in
Slot 23a is connected with U-type groove 23b, and inwardly, the position of the U-type groove 23b is with fixed plate 22j's for the opening of the U-type groove 23b
Position is corresponding, and the lower seal pad 23d and upper gasket 22e constitute a circular configuration.
The T-type pressing lever 22d1 is isolation material and is embedded with the permanent magnetism piece 22d4 of the pole N outwardly, the lid among it
21a is also isolation material and bottom surface is also embedded with the permanent magnetic strip 21c of the pole N outwardly, based on magnetic homopolar-repulsion principle, so that N
The permanent magnetism piece 21c of pole outwardly generates repulsion to the pole N permanent magnetic strip 22d4 outwardly, can be quickly through push-and-pull group 22i by fixed plate
22j pushes U-type groove 23b to.
The upper hoop 22g can be through the U being gap-matched therewith through inside groove 23a, the fixed plate 22j
The width of type groove 23b and U-type groove 23b are slightly larger than the width of fixed plate 22j, and fixed plate 22j is enabled rapidly to stick into U-type groove
In 23b, so that upper hoop 22g is connected together quickly with lower hoop 23c, installation speed is fast, and installation fastness is high.
The lid 21a is set at groove 22b and sliding slot 21b and gib block 22a is slidably connected, the gib block 22a tool
Play the role of that there is guiding to the installation of lid 21a, while the cooperation of sliding slot 21b and gib block 22a is not only convenient for lid 21a's
Install and increase the stability of 21a.
The T-type pressing lever 22d1 is located at top surface and the gib block 22a of the lower section of gib block 22a and T-type pressing lever 22d1
Between there are gaps, convenient for the Fast Installation of lid 21a.
The liquid pressing group 22d and push-and-pull group 22i are all made of sealed connection, and the water in cavity can be effectively prevent to occur
The phenomenon that leakage, further improves the fastness of device.
The working principle of the invention: the lower seal pad 23d of lower hoop 23 is fitted between first pipe 1 and second pipe 3
Bottom surface, the lower seal pad 23d of upper hoop 22, the top surface that is placed between first pipe 1 and second pipe 3, by the cunning of lid 21a
Slot 21b is inserted into groove 22b under the guiding role of gib block 22a, and the permanent magnetic strip 21c of the pole N of the bottom surface lid 21a outwardly is based on magnetic
Property homopolar-repulsion principle so that the permanent magnetism piece 21c of the pole N outwardly generates repulsion to the pole N permanent magnetic strip 22d4 outwardly so that
T-type pressing lever 22d1 drives pressing plate 22d3 to cavity 22h internal pressure, i.e. area in cavity 22h becomes smaller, and pressure becomes larger, larger
Pressure make the water snap action in cavity 22h in piston 22i1 so that piston 22i1 drives fixed plate 22j to hollow
22i3 is overhanging until being limited by limited block 22i4, so that fixed plate 22j, which rapidly enters U-type groove 23b, carries out engaging shape
State.
In conclusion the technological progress that the present invention obtains compared with the prior art is: so that fixed plate rapidly enter U-type groove into
Row buckling state, fastens fastness height and this device does not use bolt and nut, saves installation cost, need not also revolve one by one
Turn bolt and nut, there are no can must quickly be installed by external tool, need not also mentioned significantly while more manpower
High installation effectiveness, shortens the set-up time, and can quickly be dismantled when pipeline needs to repair, can effectively avoid water
Source stream is lost.
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art,
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement, all within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (8)
1. a kind of pipeline connection device for capableing of Fast Installation based on pressure principle, structure includes first pipe (1), pipe
Road connector (2), second pipe (3) are connect between the first pipe (1) and second pipe (3) by pipe jointer (2)
Together, it is characterised in that:
The pipe jointer (2) includes cover board (21), upper hoop (22), lower hoop (23), the both ends bottom of the upper hoop (22)
Through lower hoop (23) and the two fitting contact, the top surface of the upper bottom surface for binding round (22) and lower hoop (23) constitutes a round knot
The top slide of structure, the upper hoop (22) is connected with cover board (21), the appearance of the outer surface of the cover board (21) and upper hoop (22)
Face is in tangent setting, and the upper hoop (22), lower hoop (23) are connected with first pipe (1) with second pipe (3).
2. a kind of pipeline connection device for capableing of Fast Installation based on pressure principle according to claim 1, special
Sign is: the cover board (21) includes lid (21a), sliding slot (21b), and the arc-shaped structure in top surface of the lid (21a) is set
It sets, bottom surface is arranged in horizontal plane, two outsides of the lid (21a) and closer to offering concave structure on the position of top surface
Sliding slot (21b), the lid (21a), sliding slot (21b) are connect with upper hoop (22).
3. a kind of pipeline connection device for capableing of Fast Installation based on pressure principle according to claim 2, special
Sign is: the upper hoop (22) includes gib block (22a), groove (22b), O-ring seal (22c), liquid pressing group
(22d), upper gasket (22e), arc panel (22f), upper hoop (22g), cavity (22h), push-and-pull group (22i), fixed plate
(22j), through slot (22k) opens up fluted (22b) at the top of the upper hoop (22g), two inner walls at the groove (22b)
It is provided with the gib block (22a) being integrated with upper hoop (22g), the bottom surface of the groove (22b) offers
Hoop body (22g) is the through-hole of integration, and through-hole is laid there are three in equidistant formula and is respectively and fixedly provided with O-ring seal (22c), the O
Type sealing ring (22c) is connect with liquid pressing group (22d), and the liquid pressing group (22d) is also attached to upper hoop (22g), institute
It states and is offered cavity (22h) in upper hoop (22g), the cavity (22h) is built-in with water and push-and-pull group (22i), the push-and-pull group
(22i) is equipped with six groups and is symmetrically laid in the both ends of cavity (22h) in three or three, and the outside of push-and-pull group (22i) is and fixed plate
(22j) connection, the fixed plate (22j) are provided with two pieces and at the through slots (22k) in two outsides of upper hoop (22g), institute
The bottom surface for stating upper hoop (22g) is fixed with arc panel (22f), and the upper sealing of arcuate structure is connected on the arc panel (22f)
It pads (22e).
4. a kind of pipeline connection device for capableing of Fast Installation based on pressure principle according to claim 3, special
Sign is: the liquid pressing group (22d) includes T-type pressing lever (22d1), the first spring (22d2), pressing plate (22d3),
The T-type pressing lever (22d1) through O-ring seal (22c) and it is vertical with the bottom center of pressing plate (22d3) connect, institute
The bottom surface for stating pressing plate (22d3) is connected with one end of the first spring (22d2), and the other end of first spring (22d2) connects
It is connected to upper hoop (22g) inner arc end face, the pressing plate (22d3) and the first spring (22d2) are respectively positioned in cavity (22h).
5. a kind of pipeline connection device for capableing of Fast Installation based on pressure principle according to claim 3, special
Sign is: the push-and-pull group (22i) includes piston (22i1), second spring (22i2), hollow (22i3), limited block
(22i4), the piston (22i1) is set in hollow (22i3) and the two is connected by sealing ring, the hollow (22i3)
One end far from second spring (22i2) is fixed with limited block (22i4), one end of the second spring (22i2) and piston
(22i1) is connected, and the other end of the second spring (22i2) is connected to the inner arc end face of upper hoop (22g), the piston
(22i1) is connected to fixed plate (22j) far from the one end of second spring (22i2).
6. a kind of pipeline connection device for capableing of Fast Installation based on pressure principle according to claim 1, special
Sign is: the lower hoop (23) includes inside groove (23a), U-type groove (23b), lower hoop (23c), lower seal pad (23d), described
The lower seal pad (23d) of arcuate structure is fixed on the top surface of lower hoop (23c), the both ends of the lower hoop (23c) are recessed
Have inside groove (23a), the inside groove (23a) is connected with U-type groove (23b), and the opening of the U-type groove (23b) is inwardly, described U-shaped
The position of slot (23b) is corresponding with the position of fixed plate (22j), and the lower seal pad (23d) and upper gasket (22e) constitute one
A circular configuration.
7. a kind of pipeline connection device for capableing of Fast Installation based on pressure principle according to claim 3, special
Sign is: the T-type pressing lever (22d1) is isolation material and is embedded with the permanent magnetism piece (22d4) of the pole N outwardly among it.
8. a kind of pipeline connection device for capableing of Fast Installation based on pressure principle according to claim 3, special
Sign is: the lid (21a) is also isolation material and bottom surface is also embedded with the permanent magnetic strip (21c) of the pole N outwardly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811044149.4A CN109114332B (en) | 2018-09-07 | 2018-09-07 | Novel pipe connection device capable of being installed quickly based on pressure principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811044149.4A CN109114332B (en) | 2018-09-07 | 2018-09-07 | Novel pipe connection device capable of being installed quickly based on pressure principle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109114332A true CN109114332A (en) | 2019-01-01 |
| CN109114332B CN109114332B (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811044149.4A Active CN109114332B (en) | 2018-09-07 | 2018-09-07 | Novel pipe connection device capable of being installed quickly based on pressure principle |
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| CN (1) | CN109114332B (en) |
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| WO2022095107A1 (en) * | 2020-11-06 | 2022-05-12 | 张小校 | Convenient-to-fix drain pipe of dishwasher |
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| GB2521479A (en) * | 2013-12-20 | 2015-06-24 | Gm Global Tech Operations Inc | Joining means and method for joining at least two piping elements |
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| WO2022095107A1 (en) * | 2020-11-06 | 2022-05-12 | 张小校 | Convenient-to-fix drain pipe of dishwasher |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109114332B (en) | 2020-05-22 |
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Effective date of registration: 20200428 Address after: 226661 No.21, duplex Road, industrial concentration zone, Qutang Town, Hai'an City, Nantong City, Jiangsu Province Applicant after: JIANGSU GUODIAN PIPELINE EQUIPMENT Co.,Ltd. Address before: 2003 No. 1933 Jiaotong Road, Putuo District, Shanghai Applicant before: Li Meixiang |
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