CN107268753B - Sealing connection mechanism - Google Patents

Sealing connection mechanism Download PDF

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Publication number
CN107268753B
CN107268753B CN201710484612.6A CN201710484612A CN107268753B CN 107268753 B CN107268753 B CN 107268753B CN 201710484612 A CN201710484612 A CN 201710484612A CN 107268753 B CN107268753 B CN 107268753B
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China
Prior art keywords
wall hole
sealing
fitting
elastic
face
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CN201710484612.6A
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Chinese (zh)
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CN107268753A (en
Inventor
洪来聪
杨德济
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Xiamen Axent Corp Ltd
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Xiamen Axent Corp Ltd
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Priority to CN201710484612.6A priority Critical patent/CN107268753B/en
Publication of CN107268753A publication Critical patent/CN107268753A/en
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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D11/00—Other component parts of water-closets, e.g. noise-reducing means in the flushing system, flushing pipes mounted in the bowl, seals for the bowl outlet, devices preventing overflow of the bowl contents; devices forming a water seal in the bowl after flushing, devices eliminating obstructions in the bowl outlet or preventing backflow of water and excrements from the waterpipe
    • E03D11/13—Parts or details of bowls; Special adaptations of pipe joints or couplings for use with bowls, e.g. provisions in bowl construction preventing backflow of waste-water from the bowl in the flushing pipe or cistern, provisions for a secondary flushing, for noise-reducing
    • E03D11/17—Means for connecting the bowl to the flushing pipe
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D1/00—Water flushing devices with cisterns ; Setting up a range of flushing devices or water-closets; Combinations of several flushing devices
    • E03D1/38—Adaptations or arrangements of flushing pipes
    • 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
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/06—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end
    • 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
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/16—Screw-threaded joints
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D2201/00—Details and methods of use for water closets and urinals not otherwise provided for
    • E03D2201/40—Devices for distribution of flush water inside the bowl

Abstract

The invention discloses a sealing connection mechanism for sealing and fixing a pipe fitting on a wall hole, which comprises: a fitting member (100) inserted and fitted in the wall hole (410) in the working position; a tubular member (300) having a radially outward flange (310); a resilient seal (200) between the pipe flange (310) and the wall hole outer end face (411); the pipe fitting (300) and the embedded part (100) are provided with thread sections (320, 150) which are matched with each other, when the pipe fitting and the embedded part are in working positions, the elastic sealing piece (200) is extruded between the flange (310) and the outer end face (411) of the wall hole through the thread sections (150, 320), and two end faces of the elastic sealing piece (200) respectively abut against the flange (310) and the outer end face (411) of the wall hole to form sealing. The invention has the advantages of simple structure, few parts, low cost, quick and convenient installation and good sealing effect.

Description

Sealing connection mechanism
Technical Field
The invention relates to a sealing connection mechanism for sealing and fixing a pipe fitting on a wall hole.
Background
In some toilet flushing waterways, plastic pipe fittings are required to be fixedly and hermetically mounted in the ceramic holes of the toilet. At present, a copper screw rod, a copper nut and a sealing element are matched, the sealing element is arranged between the copper screw rod and the copper nut, and the copper nut props against the sealing element. During assembly, the copper nut is rotated to pull back the copper screw to forcibly extrude the sealing element to radially expand the sealing element, and then the copper screw presses the sealing element to be tightly attached to the surface of the ceramic hole, so that the sealing effect is achieved. Because the screw rod is hugged closely the sealing member and is rotated, rotatory frictional force is big, and when leading to the rotating nut, the screw rod can follow the commentaries on classics, consequently needs special frock tool, simultaneously because the extrusion sealing member needs great power, this scheme structure is complicated, the operation is arduous and with high costs.
Chinese patent database CN203924271U discloses an easily-detachable water inlet valve mechanism for a water tank, and in order to realize the installation and sealing of the water inlet valve in a ceramic water tank, a connecting mechanism of the easily-detachable water inlet valve mechanism comprises a rotary cover, a gasket ring piece, an installation base, a guide pipe, a rotation stopping sealing ring and the like. Due to the existence of the backing ring piece and the guide pipe, the parts connected with the backing ring piece also need corresponding sealing, for example, a sealing element is sleeved on an annular groove on the outer wall of the backing ring piece and is used for sealing between the rotary cover and the backing ring piece, and four sealing elements are sleeved on the outer side of the guide pipe and are used for sealing between the rotary cover, the mounting base and the guide pipe. The mechanism has a plurality of components, and has sealing at a plurality of positions, so that the phenomenon of water leakage caused by sealing failure is easy to occur.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a sealing connecting mechanism which is quick and convenient to install and has a good sealing effect.
The invention relates to a sealing connection mechanism for sealing and fixing a pipe fitting on a wall hole, which comprises:
a fitting member (100) inserted and fitted in the wall hole (410) in the working position;
a tubular member (300) having a radially outward flange (310);
a resilient seal (200) between the pipe flange (310) and the wall hole outer end face (411);
the pipe fitting (300) and the embedded part (100) are provided with thread sections (320, 150) which are matched with each other, when the pipe fitting and the embedded part are in working positions, the elastic sealing piece (200) is extruded between the flange (310) and the outer end face (411) of the wall hole through the thread sections (150, 320), and two end faces of the elastic sealing piece (200) respectively abut against the flange (310) and the outer end face (411) of the wall hole to form sealing.
Preferably, the fitting part (100) has a plurality of axially extending grooves (110) in the insertion direction, and the fitting part (100) forms a plurality of elastic pieces with radially protruding fitting parts (120) through the grooves (110) in the axial direction, the fitting parts (120) gripping the wall hole inner end surfaces (412) in the operating position.
Preferably, the front section of the pipe fitting (300) along the insertion direction is a full circle structure (330), and in the working position, the full circle structure (330) supports the embedding part (120) to clamp the inner end face (412) of the wall hole.
Preferably, the fitting part (120) is provided with a guide slope (121) along the insertion direction and a step (122) extending to the elastic piece opposite to the insertion direction.
Preferably, the fitting part (100) further forms at least two guide pieces (130) through the groove (110) in the axial direction, the guide pieces (130) are provided with grooves (131) inward in the radial direction, and the elastic rings (160) are sleeved in the grooves (131).
Preferably, the elastic sealing member (200) is sleeved on the outer wall surface of the embedded member (100), the inner wall surface of the embedded member (100) is provided with an internal thread (150), and the outer wall surface of the pipe fitting (300) is provided with an external thread (320) matched with the external thread.
Preferably, the outer wall surface of the embedded part (100) is provided with a rotation stopping protrusion (140), the inner wall surface of the elastic sealing member (200) is provided with a rotation stopping groove (210), and the rotation stopping protrusion (140) and the rotation stopping groove (210) interact to avoid rotation between the embedded part (100) and the elastic sealing member (200).
Preferably, the rotation stopping groove (210) is provided along an end surface of the elastic seal (200) facing away from the insertion direction toward the other end, but does not penetrate through to the other end surface.
Preferably, the end face of the elastic sealing piece (200) contacting with the outer end face (411) of the wall hole is provided with at least one integrally formed annular protrusion (220).
Preferably, the tube (300) is provided on the side facing away from the insertion direction with a rotary part (340) which is acted upon by hand or possibly by means of a tool for rotating the tube (300).
The invention has the beneficial effects that:
1. the embedded piece (100) is embedded in the wall hole, the elastic sealing piece (200) is extruded between the flange (310) of the pipe fitting and the outer end face (411) of the wall hole through the threads which are arranged on the pipe fitting (300) and the embedded piece (100) and matched with each other, two end faces of the elastic sealing piece (200) respectively abut against the flange (310) and the outer end face (411) of the wall hole to form sealing, and the pipe fitting is sealed and fixed on the wall hole. The invention realizes the sealing of the whole device by only one elastic sealing element (200), has simple structure, less parts, low cost, quick and convenient installation and good sealing effect.
2. The inner end face (412) of the wall hole is clamped through the embedding part (120) which is arranged on the embedding part (100) and protrudes in the radial direction, so that when the screw thread is screwed, the embedding part (120) has a tensioning effect on the inner end face (412) of the wall hole, the structure can overcome the influence of thickness fluctuation generated in the production of the wall hole, and the elastic sealing element is reliably compressed to ensure the sealing effect.
3. The part of the pipe fitting (300) supporting the embedded part embedding part (120) is of a round structure (330), so that the risk of sealing failure caused by creep performance of a plastic part can be avoided.
4. The embedding part (120) is provided with a guide inclined plane (121) along the insertion direction, the embedding part can be guided to be rapidly inserted into the wall hole, a step (122) extending to the elastic sheet is arranged in the direction opposite to the insertion direction, the influence of fluctuation of the aperture size of the wall hole generated in production can be overcome, and the fixation between the embedding part (120) and the wall hole (410) is ensured.
5. The embedded part (100) is also provided with at least two guide sheets (130) which can further guide the embedded part to be rapidly inserted into the wall hole (410) to form fixation, and meanwhile, the elastic ring (160) is sleeved in the guide sheet groove (131), so that the friction force between the wall hole (410) and the embedded part (100) can be increased, and when the pipe fitting (300) is rotated, the effect of preventing the embedded part (100) from rotating along with the pipe fitting is achieved.
6. The rotation stopping protrusion (140) and the rotation stopping groove (210) are mutually acted, so that the rotation between the embedded part (100) and the elastic sealing element (200) can be avoided when the screw thread rotates, the structure is simple, and the installation is convenient.
7. The rotation stopping groove (210) is arranged along the end face, back to the inserting direction, of the elastic sealing element (200) towards the other end, but does not penetrate through to the other end face, so that the assembly operation is facilitated, meanwhile, the influence of fluctuation of the thickness of the wall hole can be avoided to a certain extent, and the adaptability is better.
8. The end face of the elastic sealing element (200) contacting with the outer end face (411) of the wall hole is provided with at least one integrally formed annular protrusion (220), so that the sealing effect can be further enhanced, and the problem of poor sealing effect caused by the unevenness of the outer end face of the wall hole is solved.
Drawings
FIG. 1 is an exploded view of the seal connection of the present invention;
FIG. 2 is a cross-sectional view of the seal connection mechanism of the present invention in an operational state;
FIG. 3 is a schematic structural view of a fitting member of the sealing coupling mechanism according to the present invention;
FIG. 4 is a schematic view of the construction of the elastomeric seal of the sealing connection of the present invention;
FIG. 5 is a schematic view of the structure of the pipe elements of the sealing connection mechanism of the present invention;
fig. 6 is a sectional view showing an operation state of another embodiment of the sealing coupling mechanism of the present invention.
Detailed Description
The technical solution of the present invention is further illustrated and described below with reference to the accompanying drawings.
The sealing connection mechanism of the invention is used for sealing and fixing a pipe fitting on a wall hole, wherein the wall hole refers to an opening with a solid matter with a certain thickness, a water inlet opening or a water outlet opening of a certain pipeline and the like, the wall hole is generally different from the pipe fitting in material, and a relatively precise connection structure is not easy to form in the wall hole, such as a ceramic opening for fixing a water inlet valve or a water discharge valve in a toilet water tank, or a ceramic opening of a separation wall of a toilet jet water pipeline or a brush ring water pipeline and the like, but not limited thereto. Thus, with the sealed connection of the present invention, fluid can be introduced or withdrawn through the tubing into another conduit.
As shown in fig. 1-5, the sealing mechanism is used to seal and fix the pipe 300 to the wall hole 410 of the solid object or pipe 400, the wall hole 410 has a wall hole inner end surface 412 and a wall hole outer end surface 411, the wall hole outer end surface 411 is a sealing surface, and the wall hole inner end surface 412 is a fixing surface. The sealing connection mechanism of the present invention comprises three components: the fitting 100, the elastic seal 200, and the tube 300, preferably, the fitting 100 and the tube 300 are made of plastic, and the elastic seal 200 is made of rubber.
The fitting member 100 is inserted and fitted in the wall hole 410 in an operating position, the pipe 300 has a radially outward flange 310, the elastic sealing member 200 is annular and is located between the pipe flange 310 and an outer end surface 411 of the wall hole, the pipe 300 and the fitting member 100 are provided with mutually matching threaded sections, the elastic sealing member 200 is pressed between the flange 310 and the outer end surface 411 of the wall hole by the mutually matching threads in the operating position, and two end surfaces of the elastic sealing member 200 respectively abut against the flange 310 and the outer end surface 411 of the wall hole to form a seal.
Specifically, the fitting member 100 has a plurality of axially extending grooves 110 in the insertion direction, and the fitting member 100 forms a plurality of elastic pieces with radially protruding fitting portions 120 through the grooves 110 in the axial direction, the fitting portions 120 gripping the wall hole inner end surfaces 412 in the operating position. When the screw thread is screwed, the tabling part 120 has a tensioning effect on the inner end surface 412 of the wall hole, and the tabling part 120 reversely catches the inner end surface 412 of the wall hole, so that the influence of thickness fluctuation generated in the production of the wall hole can be overcome, and the elastic sealing member is reliably compressed to ensure the sealing effect.
The fitting part 120 is provided with a guide slope 121 along the insertion direction and a step 122 extending to the elastic piece opposite to the insertion direction, so that the fitting part 120 can be inserted into the wall hole 410, and the influence of fluctuation of the aperture of the wall hole caused by production can be overcome, and the fixing between the fitting part 120 and the wall hole 410 can be ensured. To further guide the quick insertion of the fitting part 120 into the wall hole 410 to be fixed, the fitting member 100 is further formed with at least two guide pieces 130 through the groove 110 in the axial direction.
In order to avoid the risk of sealing failure due to creep properties of the plastic part, the front section of the tube 300 in the insertion direction is a rounded structure 330, i.e. the part of the tube 300 supporting the engaging part 120 is the rounded structure 330, and in the operating position, the rounded structure 330 supports the engaging part 120 to clamp the inner end surface 412 of the wall hole, and for the length of the rounded structure 330, it is preferable that at least in the operating position, the end surface of the tube in the insertion direction is flush with the engaging position of the engaging part.
In order to further enhance the sealing effect and avoid the problem of poor sealing effect caused by the unevenness of the outer end surface 412 of the wall hole, at least one integrally formed annular protrusion 220 is provided on the end surface of the elastic sealing member 200 contacting with the outer end surface 411 of the wall hole, preferably, an annular protrusion is provided on the inner circumference of the end surface of the elastic sealing member 200 close to the outer wall of the fitting member, an annular protrusion is provided on the outer circumference of the end surface of the elastic sealing member 200, and an annular protrusion is provided on the middle position of the inner circumference and the outer circumference of the end surface.
As for the threaded section in which the pipe 300 and the fitting 100 are engaged with each other, it is preferable that the elastic seal member 200 is fitted around the outer wall surface of the fitting 100, the inner wall surface of the fitting 100 is provided with the female screw 150, the outer wall surface of the pipe 300 is provided with the male screw 320 engaged therewith, and the flange 310 is adjacent to the male screw 320. To facilitate the screwing, the pipe 300 is provided on the side facing away from the insertion direction with a rotary part 340, which is acted upon by hand or possibly by means of a tool, for rotating the pipe 300. It should be noted that the thread engagement form of the present invention is not limited to this, and other forms are also possible, for example, the inner wall surface of the pipe is provided with an internal thread, the outer wall surface of the fitting is provided with an external thread engaged with the internal thread, the structure of the related component is adjusted as necessary, and the structure supporting fitting portion is provided.
Meanwhile, the outer wall surface of the fitting member 100 is provided with a rotation stopping protrusion 140, the inner wall surface of the elastic sealing member 200 is provided with a rotation stopping groove 210, and the rotation stopping protrusion 140 and the rotation stopping groove 210 interact to prevent the rotation between the fitting member 100 and the elastic sealing member 200. The rotation preventing groove 210 is disposed along an end surface of the elastic sealing member 200 facing away from the insertion direction toward the other end, but does not penetrate through to the other end surface. This avoids the influence of fluctuations in the wall hole thickness to a certain extent, which leads to a better adaptation of the sealing connection according to the invention.
When the fitting is assembled, the rotation stopping protrusion 140 of the outer wall surface of the fitting member 100 is aligned with the rotation stopping groove 210 of the elastic sealing member 200, and the elastic sealing member 200 is fitted over the outer wall surface of the fitting member 100. Then, the fitting member 100 is inserted into the wall hole 410 along the guide piece 130, so that the fitting portion 120 of the fitting member 100 is caught by the wall hole inner end surface 412. Finally, the pipe member 300 is screwed into the fitting member 100 by the mutually fitting screw threads, the fitting portion 120 pulls the wall hole inner end surface 412 tightly, and at the same time, the elastic sealing member 200 is pressed between the flange 310 and the wall hole outer end surface 411 to form a seal.
In another embodiment, the guiding plate 130 is provided with a groove 131 radially inward, and the elastic ring 160 is sleeved in the groove 131 to increase the friction between the wall hole 410 and the engaging member 100, so as to prevent the engaging member 100 from rotating along with the rotating pipe 300.
The fitting 100 of the present invention is fitted into the wall hole 410, and the elastic sealing member 200 is pressed between the pipe flange 310 and the outer end surface 411 of the wall hole to form a seal by means of the mating threads of the pipe 300 and the fitting 100, thereby achieving the sealing fixation of the pipe to the wall hole. The invention realizes the sealing of the whole device by only one elastic sealing element, has simple structure, less parts, low cost, quick and convenient installation and good sealing effect.
While the preferred embodiments of the invention have been illustrated and described, it is to be understood that the invention is not limited to the precise forms disclosed herein and that the invention is not to be considered as limited to other embodiments, but may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (9)

1. A sealing connection for sealingly securing a pipe to a wall opening, comprising:
a fitting member (100) inserted into the wall hole (410) in the operating position, passed through the wall hole (410), and fitted to an inner end surface (412) of the wall hole;
a tubular member (300) having a radially outward flange (310);
a resilient seal (200) between the pipe flange (310) and the wall hole outer end face (411);
the pipe fitting (300) and the embedded part (100) are provided with thread sections (320, 150) which are matched with each other, when the pipe fitting and the embedded part are in working positions, the elastic sealing piece (200) is extruded between the flange (310) and the outer end face (411) of the wall hole through the thread sections (150, 320), and two end faces of the elastic sealing piece (200) respectively abut against the flange (310) and the outer end face (411) of the wall hole to form sealing;
the embedded part (100) is provided with a plurality of axially extending grooves (110) along the insertion direction, a plurality of elastic sheets are formed by the embedded part (100) through the grooves (110) in the axial direction, the elastic sheets are provided with embedding parts (120) protruding in the radial direction, and the embedding parts (120) are clamped on inner end surfaces (412) of wall holes in the working position.
2. The sealing connection according to claim 1, characterized in that the front section of the tube (300) in the insertion direction is a rounded structure (330), and in the operational position the rounded structure (330) supports the engagement portion (120) against the inner end surface (412) of the wall hole.
3. The sealing connection according to claim 1, characterized in that the fitting part (120) is provided with a guide slope (121) in the insertion direction and a step (122) extending to the elastic piece away from the insertion direction.
4. The sealing connection mechanism according to claim 1, wherein the engaging member (100) further forms at least two guiding pieces (130) through the groove (110) in the axial direction, the guiding pieces (130) are provided with a groove (131) radially inward, and the groove (131) is sleeved with an elastic ring (160).
5. The sealing connection mechanism according to any one of claims 1 to 4, wherein the elastic sealing member (200) is fitted over an outer wall surface of the fitting member (100), an inner wall surface of the fitting member (100) is provided with an internal thread (150), and an outer wall surface of the pipe member (300) is provided with an external thread (320) engaged therewith.
6. The sealing connection mechanism according to claim 5, wherein the fitting member (100) is provided with a rotation stopping protrusion (140) on an outer wall surface thereof, and the elastic sealing member (200) is provided with a rotation stopping groove (210) on an inner wall surface thereof, and the rotation stopping protrusion (140) and the rotation stopping groove (210) interact with each other to prevent rotation between the fitting member (100) and the elastic sealing member (200).
7. The sealing connection as claimed in claim 6, characterized in that the detent groove (210) is arranged along the end face of the elastic seal (200) facing away from the insertion direction toward the other end, but does not penetrate to the other end face.
8. The sealing connection according to any of claims 1 to 4, characterized in that the end face of the elastic sealing member (200) contacting the outer end face (411) of the wall hole is provided with at least one integrally formed annular protrusion (220).
9. The sealing connection according to any of claims 1 to 4, characterized in that the side of the tube (300) facing away from the insertion direction is provided with a rotary part (340) which is acted upon by hand or possibly by means of a tool for rotating the tube (300).
CN201710484612.6A 2017-06-23 2017-06-23 Sealing connection mechanism Active CN107268753B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201710484612.6A CN107268753B (en) 2017-06-23 2017-06-23 Sealing connection mechanism

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CN107268753B true CN107268753B (en) 2020-06-02

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Publication number Priority date Publication date Assignee Title
CN108211189B (en) * 2018-03-06 2022-11-11 苏州经贸职业技术学院 Fire control unit convenient to dismantle
CN108413135B (en) * 2018-05-14 2024-01-09 厦门科牧智能技术有限公司 Pipe buckle assembly and brush ring water pipe fixing structure
CN108751417A (en) * 2018-05-25 2018-11-06 安徽中电晶超照明有限公司 It is a kind of to be used for biological floating bed feedwater piping sealing mechanism

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102261529A (en) * 2010-05-26 2011-11-30 朱建新 Loose joint pipe fitting
CN104976477A (en) * 2014-04-04 2015-10-14 张志平 Pipe connecting mechanism
CN203924271U (en) * 2014-06-27 2014-11-05 厦门瑞尔特卫浴科技股份有限公司 A kind of water inlet valve for water tank mechanism easy to assemble
CN203940141U (en) * 2014-07-23 2014-11-12 宁波安信德亿塑业科技有限公司 A kind of pipe joint

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Application publication date: 20171020

Assignee: ECO (XIAMEN) TECHNOLOGY Inc.

Assignor: XIAMEN AXENT Corp.,Ltd.

Contract record no.: X2023980038959

Denomination of invention: A sealed connection mechanism

Granted publication date: 20200602

License type: Common License

Record date: 20230807