CN211735676U - Flexible sealing lock ring connecting sleeve and connecting structure - Google Patents
Flexible sealing lock ring connecting sleeve and connecting structure Download PDFInfo
- Publication number
- CN211735676U CN211735676U CN202020017524.2U CN202020017524U CN211735676U CN 211735676 U CN211735676 U CN 211735676U CN 202020017524 U CN202020017524 U CN 202020017524U CN 211735676 U CN211735676 U CN 211735676U
- Authority
- CN
- China
- Prior art keywords
- connecting sleeve
- plastic pipe
- pipe body
- metal connecting
- flexible sealing
- 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.)
- Active
Links
Images
Landscapes
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The utility model provides a flexible seal catch adapter sleeve and connection structure. The connecting structure comprises a metal connecting sleeve and two plastic pipe bodies which are respectively inserted at two sides of the metal connecting sleeve; the inner hole of the metal connecting sleeve is matched with the plastic pipe body; the hardness of the metal connecting sleeve is greater than that of the plastic pipe body; an annular limiting bulge is arranged in the middle of an inner hole of the metal connecting sleeve, at least one first annular mounting groove is arranged on each of two sides of the limiting bulge, and an expansion rubber ring is arranged in each first annular mounting groove. The flexible sealing lock ring connecting sleeve is a connecting sleeve in the connecting structure. The flexible sealing lock ring connecting sleeve and the connecting structure can ensure that the sealing of the connecting part between the plastic pipelines is not easy to lose efficacy, and the connecting process is convenient and fast.
Description
Technical Field
The utility model relates to the technical field of pipelines, in particular to flexible sealed lock ring adapter sleeve and connection structure.
Background
At present, the pipes of plastic drainage pipeline systems in China are mostly connected in a common socket joint mode, namely, a pipe inserting part and a socket part are respectively arranged at two ends of a plastic pipeline, and one plastic pipeline is inserted into the socket part of the other plastic pipeline to realize connection. This type of connection is prone to seal failure, for example, when uneven settlement of the foundation occurs, the connection is pulled, and the seal failure at the pipe socket part or even the disconnection of the connection is easily caused.
And the pipes of some plastic drain pipes are connected by plastic connecting sleeves, the connecting stubs of the two plastic pipes are respectively inserted into two sides of the connecting sleeves, and then the connecting sleeves are fixed by glue. When the connecting mode is installed, after each section of pipeline is connected, a period of time is needed to wait for glue to be completely dried and solidified, and then the next section of pipeline can be connected, otherwise, the joint of the previous section of pipeline is easily degummed, so that the connecting work of the connecting mode consumes too long time. Moreover, the plastic connecting sleeve can not provide good external rigidity protection, and the joint is easy to deform, break, misplace and the like after geological change, so that the water leakage probability is increased, and the water and soil loss and other consequences are easy to cause.
It is seen that the prior art is susceptible to improvements and enhancements.
SUMMERY OF THE UTILITY MODEL
In view of the foregoing prior art, an object of the utility model is to provide a flexible sealing catch adapter sleeve and connection structure, can make the sealed difficult inefficacy of junction between the plastic conduit, and connection process convenient and fast.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a flexible sealing lock ring connecting structure comprises a metal connecting sleeve and two plastic pipe bodies which are respectively inserted at two sides of the metal connecting sleeve; the inner hole of the metal connecting sleeve is matched with the plastic pipe body; the hardness of the metal connecting sleeve is greater than that of the plastic pipe body;
an annular limiting bulge is arranged in the middle of an inner hole of the metal connecting sleeve, at least one first annular mounting groove is arranged on each of two sides of the limiting bulge, and an expansion rubber ring is arranged in each first annular mounting groove.
In the flexible sealing lock ring connecting structure, the end face of the plastic pipe body is abutted against the side face of the limiting bulge, a second annular mounting groove is formed in the end face of the plastic pipe body, and a sealing ring is arranged in the second annular mounting groove.
In the flexible sealing lock ring connecting structure, a locking mechanism is arranged between the inner hole of the metal connecting sleeve and the outer peripheral surface of the plastic pipe body.
In some flexible sealing lock ring connecting structures, the locking mechanism includes a plurality of first annular protrusions/first annular grooves arranged on the inner hole wall of the metal connecting sleeve and arranged along the axial direction of the metal connecting sleeve, and second annular grooves/second annular protrusions arranged on the outer circumferential surface of the plastic pipe body and matched with the first annular protrusions/first annular grooves.
Furthermore, the first annular bulge/the second annular bulge are provided with inclined force unloading grooves.
In some flexible sealing lock ring connecting structures, the locking mechanism comprises a clamp ring mounting groove formed on the outer peripheral surface of the plastic pipe body, a clamp ring arranged in the clamp ring mounting groove, and a clamp ring clamping groove formed on the inner hole wall of the metal connecting sleeve and used for the clamp ring to extend into; the outermost side of the snap ring protrudes out of the outer peripheral surface of the plastic pipe body in a natural state and can be contracted to not protrude out of the outer peripheral surface of the plastic pipe body when being pressed.
Wherein the clamping ring is a C-shaped wavy clamping ring; when the two ends of the opening of the C-shaped wave snap ring are folded, the outer side of the C-shaped wave snap ring does not protrude out of the outer peripheral surface of the plastic pipe body, and after the two ends of the opening of the C-shaped wave snap ring are separated, the outer side of the C-shaped wave snap ring protrudes out of the outer peripheral surface of the plastic pipe body and the inner side of the C-shaped wave snap.
Or, the snap ring includes the cover body and a plurality of elasticity spacing piece that embolia the snap ring mounting groove, evenly correspond along circumference on the cover body and be provided with a plurality of holes of stepping down, each the stiff end of elasticity spacing piece all with the hole edge of stepping down hole towards metal connecting sleeve one side is connected, the free end of elasticity spacing piece dorsad metal connecting sleeve and under free state along keeping away from the direction slope of the side wall face of the cover body.
In some flexible sealing lock ring connecting structures, the locking mechanism comprises a plurality of clamping protrusions which are circumferentially arranged on the inner hole wall of the metal connecting sleeve, and L-shaped clamping grooves which are correspondingly arranged on the outer peripheral surface of the plastic pipe body; l shape joint groove comprises along the first slot part of plastic tubing axial extension to plastic tubing body end face department and the second slot part of extending along plastic tubing circumference.
The flexible sealing lock ring connecting sleeve is a connecting sleeve in the flexible sealing lock ring connecting structure.
Has the advantages that:
the utility model provides a pair of flexible seal catch adapter sleeve and connection structure has following advantage:
1. the plastic pipe body is inserted into the inner hole of the metal connecting sleeve, the expansion rubber ring wets water, and the expansion rubber ring can expand and lock the plastic pipe body, so that connection is realized, and the connection process is convenient and quick;
2. the expansion rubber ring has a sealing function, and the metal connecting sleeve is made of metal harder than the plastic pipe body, so that the plastic pipe wall of the plastic pipe body can be adhered to the metal connecting sleeve after being connected for a period of time, the sealing performance is further improved, and the sealing is not easy to lose efficacy;
3. after the plastic pipe wall of the plastic pipe body is adhered to the metal connecting sleeve, the connecting strength can be further improved, so that the plastic pipe body and the metal connecting sleeve are not easy to separate;
4. because the metal connecting sleeve can provide rigid wrapping for the connecting part, the water leakage caused by the damage of interface deformation, fracture, dislocation and the like when geological change occurs can be effectively avoided, and the water and soil loss caused by water leakage is avoided.
Drawings
Fig. 1 is a schematic structural diagram of a first flexible sealing lock ring connection structure provided by the present invention.
Fig. 2 is a schematic structural diagram of a second flexible sealing locking ring connection structure provided by the present invention.
Fig. 3 is a schematic structural diagram of a first snap ring in a second flexible sealing locking ring connection structure provided by the present invention.
Fig. 4 is a schematic structural diagram of a second snap ring in a second flexible sealing locking ring connection structure provided by the present invention.
Fig. 5 is a schematic structural diagram of a third flexible sealing locking ring connection structure provided by the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
The following disclosure provides embodiments or examples for implementing different configurations of the present invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
Referring to fig. 1-5, the flexible sealing lock ring connecting structure provided by the present invention includes a metal connecting sleeve 1 and two plastic pipe bodies 2 respectively inserted into two sides of the metal connecting sleeve; the inner hole of the metal connecting sleeve 1 is matched with the plastic pipe body 2; the hardness of the metal connecting sleeve 1 is greater than that of the plastic pipe body 2;
an annular limiting bulge 1.1 is arranged in the middle of an inner hole of the metal connecting sleeve 1, at least one first annular mounting groove 1.2 is respectively arranged on two sides of the limiting bulge, and an expansion rubber ring 1.3 is arranged in the first annular mounting groove.
The connecting structure has the following advantages:
1. the plastic pipe body 2 is inserted into the inner hole of the metal connecting sleeve 1, the expansion rubber ring 1.3 is wetted, and the expansion rubber ring 1.3 (in the prior art) can expand and lock the plastic pipe body, so that the connection is realized, and the connection process is convenient and quick;
2. the expansion rubber ring 1.3 has a sealing function, and the metal connecting sleeve 1 is made of metal (steel, aluminum alloy and the like) harder than the plastic pipe body 2, so that after the plastic pipe body 2 is connected for a period of time, the plastic pipe wall of the plastic pipe body 2 is adhered to the metal connecting sleeve 1, the sealing performance is further improved, and the sealing is not easy to lose efficacy;
3. after the plastic pipe wall of the plastic pipe body 2 is adhered to the metal connecting sleeve 1, the connecting strength can be further improved, so that the plastic pipe body 2 and the metal connecting sleeve 1 are less prone to being separated;
4. because the metal connecting sleeve 1 can provide rigid wrapping for the connecting part, the water leakage caused by the damage of interface deformation, fracture, dislocation and the like when geological change occurs can be effectively avoided, and the water and soil loss caused by water leakage is avoided.
It should be noted that the expansion rubber ring 1.3 can be regarded as a part of the metal connecting sleeve 1, and the metal connecting sleeve 1 is provided with the expansion rubber ring 1.3 when leaving a factory; the expansion rubber ring 1.3 can also not be regarded as a part of the metal connecting sleeve 1, and the expansion rubber ring 1.3 is not arranged when the connecting sleeve 1 leaves a factory, and the expansion rubber ring 1.3 is put in when the connecting is carried out.
In some embodiments, the end surface of the plastic pipe body 2 abuts against the side surface of the limiting protrusion 1.1, and a second annular mounting groove 2.1 is arranged on the end surface of the plastic pipe body 2, and a sealing ring 2.2 is arranged in the second annular mounting groove, so as to further improve the sealing performance.
In some preferred embodiments, a locking mechanism is provided between the inner hole of the metal connecting sleeve 1 and the outer circumferential surface of the plastic pipe body 2. After the plastic pipe body 2 is inserted into the metal connecting sleeve 1, the plastic pipe body 2 is locked by the locking mechanism so as to prevent the plastic pipe body 2 from loosening before the expansion rubber ring 1.3 expands, and meanwhile, the locking mechanism can also improve the connecting strength between the plastic pipe body 2 and the metal connecting sleeve 1.
The specific structure of the locking mechanism is various, and the specific structure is not limited herein, and several specific structures thereof will be described below by specific examples.
Example one
Referring to fig. 1, the locking mechanism of the flexible sealing lock ring connecting structure provided in this embodiment includes a plurality of first annular protrusions/first annular grooves 1.4 disposed on the inner hole wall of the metal connecting sleeve 1 and arranged along the axial direction of the metal connecting sleeve 1, and second annular grooves/second annular protrusions 2.3 disposed on the outer circumferential surface of the plastic pipe body 2 and adapted to the first annular protrusions/first annular grooves 1.4. After the plastic pipe body 2 is inserted into the metal connecting sleeve 1, the first annular protrusion/first annular groove 1.4 and the second annular groove/second annular protrusion 2.3 are mutually clamped, so that the plastic pipe body 2 can be prevented from being separated.
Furthermore, the first type annular bulge/the second type annular bulge 2.3 is provided with an inclined force unloading groove 2.4. The first annular bulge/the second annular bulge 2.3 is cut into a plurality of sections of circular arc bulges by the force unloading groove 2.4, so that the plastic pipe body 2 can play a role in unloading force when being inserted into the metal connecting sleeve 1, and the plastic pipe body 2 can be more easily inserted into the metal connecting sleeve 1.
The first-type annular protrusion/first-type annular groove 1.4 may be, but is not limited to, a triangular protrusion/groove, a sawtooth protrusion/groove, a circular arc protrusion/groove, and the like.
Example two
Referring to fig. 2-4, in the flexible sealing lock ring connecting structure provided in this embodiment, the locking mechanism includes a clamp ring mounting groove 2.5 formed on the outer peripheral surface of the plastic pipe body 2, a clamp ring 3 disposed in the clamp ring mounting groove 2.5, and a clamp ring engaging groove 1.5 formed on the inner hole wall of the metal connecting sleeve 1 for the clamp ring 3 to extend into; the outermost side of the snap ring 3 protrudes from the outer circumferential surface of the plastic pipe body 2 in a natural state, and can be contracted so as not to protrude from the outer circumferential surface of the plastic pipe body 2 when being pressed.
In the process that the plastic pipe body 2 is inserted into the metal connecting sleeve 1, the clamping ring 3 is pressed to be not protruded out of the outer peripheral surface of the plastic pipe body 2, so that the plastic pipe body 2 is not blocked from being inserted into the metal connecting sleeve 1, when the clamping ring is inserted in place, the clamping ring 3 moves to the position aligned with the clamping ring clamping groove 1.5, the clamping ring 3 is released at the moment, the outer side of the clamping ring can stretch into the clamping ring clamping groove 1.5, the plastic pipe body 2 and the metal connecting sleeve 1 are clamped, and the plastic pipe body 2 cannot be separated from the metal connecting.
In some embodiments, see fig. 3, the snap ring 3 is a C-shaped wave snap ring; when the two ends of the opening of the C-shaped wave snap ring are folded, the outer side of the C-shaped wave snap ring does not protrude out of the outer peripheral surface of the plastic pipe body 2, and after the two ends of the opening of the C-shaped wave snap ring are separated, the outer side of the C-shaped wave snap ring protrudes out of the outer peripheral surface of the plastic pipe body 2 and the inner side of the C-shaped wave snap ring; when the plastic pipe body 2 is inserted into the metal connecting sleeve 1, the C-shaped wave snap ring is firstly pressed to enable two ends of an opening of the C-shaped wave snap ring to be folded, then the plastic pipe body 2 is inserted into the metal connecting sleeve 1, and when the plastic pipe body is inserted in place, the C-shaped wave snap ring can be bounced to realize clamping;
in other embodiments, as shown in fig. 4, the snap ring 3 includes a sleeve body 3.1 sleeved in the snap ring mounting groove 2.5 and a plurality of elastic limiting pieces 3.2, the sleeve body 3.1 is uniformly and correspondingly provided with a plurality of abdicating holes 3.3 along the circumferential direction, the fixed end of each elastic limiting piece 3.2 is connected with the hole edge of the abdicating hole 3.3 towards one side of the metal connecting sleeve 1, the free end of the elastic limiting piece 3.2 is back to the metal connecting sleeve 1 and is inclined along the direction far away from the side wall surface of the sleeve body 3.1 in a free state; when the plastic pipe body 2 is inserted into the metal connecting sleeve 1, the inner wall of the metal connecting sleeve 1 can automatically extrude the elastic limiting sheet 3.2 to press the elastic limiting sheet into the abdicating hole 3.3, so that the insertion is prevented from being hindered, and when the plastic pipe body is inserted in place, the elastic limiting sheet 3.2 is released and popped out to realize clamping;
the structure of the snap ring 3 is not limited thereto.
EXAMPLE III
Referring to fig. 5, in the flexible sealing lock ring connecting structure provided in this embodiment, the locking mechanism includes a plurality of engaging protrusions 1.6 circumferentially disposed on an inner wall of the metal connecting sleeve 1, and L-shaped engaging grooves 2.6 correspondingly disposed on an outer circumferential surface of the plastic pipe body 2; l shape joint groove 2.6 comprises along 2 axial extensions of plastic pipe body to the first slot part 2.6a of 2 terminal surfaces of plastic pipe body and along 2 circumference extension's of plastic pipe body second slot part 2.6 b.
During connection, the clamping protrusion 1.6 is aligned to the first groove part 2.6a, and the plastic pipe body 2 is rotated after insertion to enable the clamping protrusion 1.6 to slide into the second groove part 2.6b, so that the plastic pipe body 2 and the metal connecting sleeve 1 cannot move relatively in the axial direction.
The utility model provides a pair of flexible sealed catch adapter sleeve, this flexible sealed catch adapter sleeve be the adapter sleeve among the above-mentioned flexible sealed catch connection structure.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-mentioned preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and the embodiments are substantially the same as the present invention.
Claims (10)
1. A flexible sealing lock ring connecting structure is characterized by comprising a metal connecting sleeve and two plastic pipe bodies which are respectively inserted at two sides of the metal connecting sleeve; the inner hole of the metal connecting sleeve is matched with the plastic pipe body; the hardness of the metal connecting sleeve is greater than that of the plastic pipe body;
an annular limiting bulge is arranged in the middle of an inner hole of the metal connecting sleeve, at least one first annular mounting groove is arranged on each of two sides of the limiting bulge, and an expansion rubber ring is arranged in each first annular mounting groove.
2. The flexible sealing lock ring connection structure according to claim 1, wherein an end surface of the plastic pipe body abuts against a side surface of the stopper protrusion, and a second annular mounting groove is provided on the end surface of the plastic pipe body, and a seal ring is provided in the second annular mounting groove.
3. The flexible sealing shackle connection structure as defined in claim 1, wherein a locking mechanism is provided between the inner bore of the metal connecting sleeve and the outer circumferential surface of the plastic pipe body.
4. The flexible sealing lock ring connecting structure according to claim 3, wherein the locking mechanism includes a plurality of first type annular protrusions/first type annular grooves provided on the inner wall of the metal connecting sleeve and arranged in the axial direction of the metal connecting sleeve, and second type annular grooves/second type annular protrusions provided on the outer circumferential surface of the plastic pipe body and fitted with the first type annular protrusions/first type annular grooves.
5. The flexible sealing shackle connection according to claim 4, wherein the first type/second type annular protrusion is provided with an inclined force relief groove.
6. The flexible sealing lock ring connection structure according to claim 3, wherein the locking mechanism includes a snap ring mounting groove formed on the outer circumferential surface of the plastic pipe body, a snap ring disposed in the snap ring mounting groove, and a snap ring catching groove formed on the inner hole wall of the metal connecting sleeve for the snap ring to extend into; the outermost side of the snap ring protrudes out of the outer peripheral surface of the plastic pipe body in a natural state and can be contracted to not protrude out of the outer peripheral surface of the plastic pipe body when being pressed.
7. The flexible sealing shackle connection according to claim 6, wherein the snap ring is a C-shaped wave snap ring; when the two ends of the opening of the C-shaped wave snap ring are folded, the outer side of the C-shaped wave snap ring does not protrude out of the outer peripheral surface of the plastic pipe body, and after the two ends of the opening of the C-shaped wave snap ring are separated, the outer side of the C-shaped wave snap ring protrudes out of the outer peripheral surface of the plastic pipe body and the inner side of the C-shaped wave snap.
8. The flexible sealing lock ring connecting structure according to claim 6, wherein the lock ring includes a sleeve body sleeved into the lock ring mounting groove and a plurality of elastic limiting pieces, the sleeve body is provided with a plurality of abdicating holes along a circumferential direction, a fixed end of each elastic limiting piece is connected with a hole edge of the abdicating hole facing one side of the metal connecting sleeve, and a free end of each elastic limiting piece faces away from the metal connecting sleeve and is inclined in a direction away from a side wall surface of the sleeve body in a free state.
9. The flexible sealing lock ring connecting structure according to claim 3, wherein the locking mechanism comprises a plurality of clamping protrusions circumferentially arranged on the inner hole wall of the metal connecting sleeve, and L-shaped clamping grooves correspondingly arranged on the outer peripheral surface of the plastic pipe body; l shape joint groove comprises along the first slot part of plastic tubing axial extension to plastic tubing body end face department and the second slot part of extending along plastic tubing circumference.
10. A flexible sealing shackle connecting sleeve, characterised in that it is the connecting sleeve in a flexible sealing shackle connection according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020017524.2U CN211735676U (en) | 2020-01-06 | 2020-01-06 | Flexible sealing lock ring connecting sleeve and connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020017524.2U CN211735676U (en) | 2020-01-06 | 2020-01-06 | Flexible sealing lock ring connecting sleeve and connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211735676U true CN211735676U (en) | 2020-10-23 |
Family
ID=72867715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020017524.2U Active CN211735676U (en) | 2020-01-06 | 2020-01-06 | Flexible sealing lock ring connecting sleeve and connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211735676U (en) |
-
2020
- 2020-01-06 CN CN202020017524.2U patent/CN211735676U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10415728B2 (en) | Seal for a pipe coupling | |
| EP3521675B1 (en) | Pipe fitting connecting method | |
| CN211735676U (en) | Flexible sealing lock ring connecting sleeve and connecting structure | |
| CN212107315U (en) | Flexible sealing self-locking socket polyvinyl chloride solid wall pipe | |
| KR100881351B1 (en) | Expanding pipe with separation prevention structure | |
| JP6525636B2 (en) | How to connect backup ring, fittings and pipes | |
| CN109084105B (en) | Reinforced concrete push pipe ring groove type joint connection structure | |
| JP2006322541A (en) | Hose clamp | |
| JP2013177911A (en) | Hose connector | |
| KR101375487B1 (en) | Rubber rings for plastic pipes having moving prevention | |
| CN216112692U (en) | Welded pipe connector | |
| JP4433340B2 (en) | Retaining member | |
| KR102392302B1 (en) | Apparatus for connecting pipes | |
| CN212657420U (en) | A bypass device for irrigate | |
| JP4593409B2 (en) | Expandable flexible joint structure | |
| KR100540783B1 (en) | Coupling for pipe arrangement | |
| CN214889431U (en) | Resin concrete pipe | |
| JP7269105B2 (en) | Connection structure of synthetic resin pipes | |
| CN218063831U (en) | Corrugated pipe socket joint type anti-drop structure | |
| CN211231960U (en) | Pipeline joint assembly | |
| CN211010332U (en) | Quick connector | |
| CN212564728U (en) | Hose clamp | |
| CN221504276U (en) | Conveying pipe connecting device | |
| CN216555910U (en) | Anti-drop pipe connecting structure | |
| CN213332988U (en) | Clamp-press type pipe inner buckle type quick connector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |