CN208074351U - A kind of tubing connecting device - Google Patents
A kind of tubing connecting device Download PDFInfo
- Publication number
- CN208074351U CN208074351U CN201820304771.3U CN201820304771U CN208074351U CN 208074351 U CN208074351 U CN 208074351U CN 201820304771 U CN201820304771 U CN 201820304771U CN 208074351 U CN208074351 U CN 208074351U
- Authority
- CN
- China
- Prior art keywords
- pipe
- built
- puncture tube
- connecting device
- module
- 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
Landscapes
- Pipe Accessories (AREA)
Abstract
The utility model discloses a kind of tubing connecting devices, including Puncture Tube, built-in pipe and unit of plugging into；Puncture Tube is sheathed on built-in pipe, and Puncture Tube has the degree of freedom relative to built-in pipe axial displacement, and sealing ring is equipped between the outer wall of Puncture Tube and the inner wall of built-in pipe；Unit of plugging into include the first of the both ends for being divided into Puncture Tube and built-in pipe plug into module, second plug into module；The unit of plugging into can be external and locks tubing, achieve the purpose that be attached different tubing, realize the basic function of the connecting device, the Puncture Tube can carry out axial movement relative to the built-in pipe, realize the Telescopic of the connecting device, sealing ring plays the effect of sealing in use, connecting device described in the utility model is simple in structure, it can be rapidly completed and plug into unlike material tubing, and it can provide displacement longer compensation rate, it is applied widely and easy to operate.
Description
Technical field
The utility model is related to building pipe technical field more particularly to a kind of tubing connecting devices.
Background technology
For flexible pipe fitting since the temperature change of connection telescoping tube or bellows is larger, the use for the pipe fitting that stretches is a kind of protection
Measure, flexible pipe fitting are pump, valve, and the new product that the equipment such as pipeline are connect with pipeline connects them by full bolt,
Entirety is become, and has certain displacement, facilitates installation.It can bear the axial compressive force of pipeline.It can thus install
It when repair, is adjusted according to in-site installation size, at work, not only improves working efficiency, but also to pipelines such as pump, valves
Equipment plays certain protective role.
Existing flexible pipe fitting technology：(1) the flexible pipe fitting of flange form pine set：After pine set telescopic joint is mounted on pipeline, tighten
Nut elastic seal ring, mutual gradient under the action of nut gland are pressed on outside pipe and enclose sealing and connection function.Work as temperature
Degree variation when pipe can in the tube between freely stretch, work as setting of ground, pipe energy deflection, and ensure seal ne-leakage, from
And play automatic compensation purpose.(2) the flexible pipe fitting of single flange limiting：Suitable for one side and flanged joint, welded on one side with pipeline,
Product both ends and pipeline or the installation length of flange are adjusted when installation, diagonally uniformly tighten gland bolt, then adjust nut, this
Sample could allow pipeline that can freely stretch within the scope of stroke, lock stroke, it is ensured that the safe operation of pipeline.(3) double methods
Blue limit telescopic pipe fitting：And flanged joint suitable for both sides, adjustment product both ends connection length when installation, diagonally successively uniformly
Gland bolt is tightened, then adjusts stop nut, pipeline could be allowed freely to stretch later, locks stroke, it is ensured that the peace of pipeline
Row for the national games.
The shortcomings that prior art：The operation too complex of installation, the replacement of above-described flexible pipe fitting, displacement compensation amount
It is short, need the auxiliary tool operation of profession, the profession of construction requires high, is usually all the need for the construction team of qualification to construct,
Construction can not be rapidly completed in the case of specific.
Utility model content
In order to overcome the shortcomings of the prior art.The utility model provides a kind of simple in structure and displacement compensation amount length
Tubing connecting device.
In order to solve the above-mentioned technical problem, the utility model provides a kind of tubing connecting device, including Puncture Tube, built-in pipe
And the unit of plugging into for installing tubing；
The Puncture Tube is sheathed on the built-in pipe, and the Puncture Tube has relative to the built-in pipe axial displacement
Degree of freedom is equipped with sealing ring between the outer wall of the Puncture Tube and the inner wall of the built-in pipe；
The unit of plugging into includes the first of the both ends for being divided into the Puncture Tube and the built-in pipe plugging into module, second
It plugs into module；
One end of the Puncture Tube is connected with the described first module of plugging into, and the other end of the Puncture Tube is free end；
One end of the built-in pipe is connected with the described second module of plugging into, and the other end of the built-in pipe is free end.
Preferably, it is equipped between the built-in pipe and the Puncture Tube for limiting the built-in pipe and Puncture Tube
Displacement to axial axial positioning structure.
Preferably, the axial positioning structure be set to the free end of the Puncture Tube and the built-in pipe from
Between holding.
Preferably, the axial positioning structure includes that the first limit on the outer wall of the built-in pipe is flat
Face, and the second limit plane on the inner wall of the Puncture Tube.
Preferably, the Puncture Tube plugged between module with described first to be threadedly coupled or be welded to connect or
Person is bonded using glue, and the built-in pipe plugs into described second and is either welded to connect or utilizes to be threadedly coupled between module
Glue bonds.
Preferably, the outer wall of the free end of the built-in pipe is equipped with the groove for placing the sealing ring.
Preferably, described first plug into module and described second plug into module include fixing piece, external piece with
And the sealing element between the fixing piece and the external piece；
One end of the fixing piece is connect with the Puncture Tube or the built-in pipe, and one end of the fixing piece is arranged institute
State external piece.
Preferably, the fixing piece is equipped with the groove for placing the sealing element.
The sealing element includes the fixing ring being set between the fixing piece and the external piece and is set to described
O-ring seal between fixing ring and external piece.
Preferably, the fixing ring is in the A fonts equipped with a ring groove, the ring on the fixing ring
Groove is arranged backwards to the external piece.
Preferably, the end of the external piece is equipped with buckle, and the inner wall of the fixing piece is equipped with and the card
Detain the card slot to match.
A kind of tubing connecting device that the utility model embodiment is provided, compared with prior art, advantage is：
Described in the utility model first plugs into module and the second module of plugging into can be external and locks tubing, reaches to different pipes
The purpose that material is attached, realizes the basic function of the connecting device, the Puncture Tube can relative to the built-in pipe into
The axial movement of row, realizes the Telescopic of the connecting device, the sealing being set between the Puncture Tube and the built-in pipe
Circle plays the connecting device effect of sealing for preventing liquid from being flowed out from gap in use, described to connect
It is simple to refute apparatus structure, can be rapidly completed and plug into unlike material tubing, and can provide displacement longer compensation rate,
It is applied widely and easy to operate.
Description of the drawings
It, below will be to attached needed in embodiment in order to illustrate more clearly of the technical solution of the utility model
Figure is briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the utility model, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the structural upright schematic diagram of the tubing connecting device of the utility model embodiment.
Fig. 2 is the contraction state schematic cross-sectional view of the tubing connecting device of the utility model embodiment.
Fig. 3 is the tensional state schematic cross-sectional view of the tubing connecting device of the utility model embodiment.
Fig. 4 is the enlarged drawing at the A in Fig. 2 figures.
Fig. 5 is the enlarged drawing at the B in Fig. 2 figures.
In figure：1. Puncture Tube；2. built-in pipe；3. sealing ring；4. the first limit plane；5. the second limit plane；6. tubing；
7. external piece；8. fixing piece；9.O type sealing rings；10. fixing ring.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
The every other embodiment obtained, shall fall within the protection scope of the present invention.
It please refers to Fig.1 to Fig. 5, the utility model preferred embodiment provides a kind of tubing connecting device, including external
Pipe 1, built-in pipe 2 and the unit of plugging into for installing tubing；The Puncture Tube 1 is sheathed on the built-in pipe 2, described external
Pipe 1 has the degree of freedom relative to 2 axial displacement of the built-in pipe, the inner wall of the outer wall of the Puncture Tube 1 and the built-in pipe 2
Between be equipped with sealing ring 3；The unit of plugging into includes the first of the both ends for being divided into the Puncture Tube 1 and the built-in pipe 2 connecing
It refutes module, second plug into module；One end of the Puncture Tube 1 is connected with the described first module of plugging into, the Puncture Tube 1 it is another
One end is free end；One end of the built-in pipe 2 is connected with the described second module of plugging into, and the other end of the built-in pipe 2 is
Free end.
Tubing connecting device based on above-mentioned technical characteristic plugs into using described first and module and second plugs into module
Can be external and tubing 6 be locked, achievees the purpose that be attached different tubing, realize the basic training of the connecting device
Can, the Puncture Tube 1 can carry out axial movement relative to the built-in pipe 2, realize the Telescopic of the connecting device,
Sealing ring 3 between the Puncture Tube 1 and the built-in pipe 2 connects for preventing liquid from being flowed out from gap for described
The effect that device plays sealing in use is refuted, the connecting device is simple in structure, can be rapidly completed to unlike material
Tubing is plugged into, and can provide displacement longer compensation rate, applied widely and easy to operate.
As shown in Figures 2 and 3, when the connecting device is in tensional state, the free end of the Puncture Tube 1 with it is described
The free end of built-in pipe 2 abuts against, and plugging into for the Puncture Tube 1 holds the end of plugging into the built-in pipe 2 to be located at outside described
Set the both sides at the place that offsets of the free end of pipe 1 and the free end of the built-in pipe 2；When the connecting device is in contraction state
When, the free end of the Puncture Tube 1 and the end of plugging into of the built-in pipe 2 abut against, the Puncture Tube 1 plug into end with it is described
The free end of built-in pipe 2 abuts against.
Further, it is equipped between the built-in pipe 2 and the Puncture Tube 1 for limiting the built-in pipe 2 and Puncture Tube
The axial positioning structure of 1 displacement to axial, for preventing staff when using the connecting device, the displacement of stretching
More than in the stretchable range of the connecting device, avoid causing unnecessary harm to the connecting device.
Further, in order to reach the maximum displacement that the connecting device can be born, the axial positioning structure is arranged
Between the free end of the Puncture Tube 1 and the free end of the built-in pipe 2.
Further, the axial positioning structure includes the first limit plane on the outer wall of the built-in pipe 2
4, and the second limit plane 5 on the inner wall of the Puncture Tube 1, in the present embodiment, using apart from the built-in pipe 2
The farthest boss circle in free end on side plane as the first limit plane 4 so that structure is more succinct, material saving
Cost；The second limit plane 5 is the cascaded surface extended radially out on the inner wall of the Puncture Tube 1, first limit
Plane 4 and the second limit plane 5 can be abutted mutually, when reaching the stretchable maximum displacement of the connecting device so that
The built-in pipe 2 and the Puncture Tube 1 can mutually block positioning, avoid further being subjected to displacement, cause the built-in pipe 2 and
The disengaging of the Puncture Tube 1.
As shown in Figure 1 to Figure 3, the Puncture Tube 1 is plugged between module with described first to be threadedly coupled or weld company
Connect either utilize glue bond the built-in pipe 2 plugged between module with described second to be threadedly coupled or be welded to connect or
Person is bonded using glue, such as：The connection types such as threaded connection, glue, hot melt, ultrasonic bonding, rotating welding.In this implementation
In example, the described first plug into module and connection type of the Puncture Tube 1 is is threadedly coupled, and the threaded connection is including being set to
Described first plugs into the internal thread in module and the external screw thread on the Puncture Tube 1, the internal thread and the outer spiral shell
Line can carry out opposite screw, reach a kind of dismountable purpose so that described first plug into module and the tubing 6 into
It after row docking, then is connected through a screw thread and is linked as entirety, making it, the operation is more convenient, it is to be understood that is described to be threadedly coupled also
Described first can be provided to plug into the external screw thread in module and the internal thread on the Puncture Tube 1, to reach identical
Dismountable purpose；Described second plug into module and the connection type of the built-in pipe 2 is that glue connect, the built-in pipe 2 and
Described second module junction space of plugging into is smaller, therefore uses the glue adhesion for taking up space smaller, avoids caused by diameter is too small
Local hydraulic pressure is excessive.
As shown in figure 4, the outer wall of the free end of the built-in pipe 2 is equipped with the groove for placing the sealing ring 3,
In the present embodiment, be equipped on the built-in pipe 2 quantity and the groove relative to boss circle, the groove is set to boss
On circle, be conducive to the tight fit of the sealing ring 3 and the Puncture Tube 1, reach better seal effect.
As shown in Figure 1, Figure 2, shown in Fig. 3 and Fig. 5, described first plug into module and described second plug into module include fix
Part 8, external piece 7 and the sealing element between the fixing piece 8 and the external piece 7；One end of the fixing piece 8 and institute
It states Puncture Tube 1 or the built-in pipe 2 connects, one end of the fixing piece 8 is arranged the external piece 7；The tubing 6 passes through
The external piece 7 enters the inside of the fixing piece 8, and the outer wall of the tubing 6 can squeeze the sealing element, realizes
Sealing effect between tubing 6 and the connecting device.
As shown in figure 5, the fixing piece 8 is equipped with the groove for placing the sealing element.The sealing element includes being set to
Fixing ring 10 between the fixing piece 8 and the external piece 7 and set on the fixing ring 10 and external piece 7 it
Between O-ring seal 9.The cooperation for being conducive to the tubing 6 and the fixing ring 10 and O-ring seal 9, reaches more preferable
Sealing effect.
Further, in the present embodiment, it is set between the outer wall and the inner wall of the built-in pipe 2 of the Puncture Tube 1
Sealing ring 3 is also O-ring, and the O-ring has the characteristics that：(1) in certain temperature range, there is good leakproofness
Can, and sealing performance can be improved automatically with the increase of pressure；(2) O-ring seal and the tubing 6 or the Puncture Tube 1
Between friction is small, be conducive to the tubing 6 and inject in the module of plugging into；(3) resistance to corrosion is strong, is not easy old
To change, long working life, wearability is good, can be compensated automatically to a certain extent after abrasion,；(4) simple in structure, it safeguards, replacement side
Just so that the connecting device has longer service life.
Further, the fixing ring 10 is in the A fonts equipped with a ring groove, and the ring on the fixing ring is recessed
Slot is arranged backwards to the external piece, because can all there is some differences in the size of the every tubing 6, this species diversity may
Cause the compressive strength of the O-ring seal 9 inadequate, to cause to leak, the structure design of the fixing ring 10 can have
Effect avoids the generation of such case, a side plane of the fixing ring 10 in A fonts from being equipped with ring groove；When described
When the diameter of tubing 6 is less than normal, because the interior diameter of 10 reset condition of the fixing ring is more straight than in the O-ring seal 9
Diameter is small, so the contact area of the fixing ring 10 is larger, can make up the O-ring seal 9 may cause leakage
Problem, when 6 size of the tubing is bigger than normal, the tubing 6 can generate the fixing ring 10 larger pressure, be equivalent to
The space of the ring groove is unloaded so that the sealing area of fixing ring 10 is bigger than traditional O-ring seal 9, sealing
It is better；In the present embodiment, described first plug into module and second plug into module use Double seal ring form, carry
The sealing effect of the connecting device in use is risen, coordinates sealing effect when non-national standard tubing particularly aobvious for being promoted
It writes.
In pipeline connection type, in order to ensure the bonding strength between the connecting device and the tubing 6, this practicality
The novel connecting device uses self-lock mechanism so that under the outer force effect of hydraulic pressure, the tubing 6 can tightly be locked at institute
It states in plugging into module, when pressure is bigger, coupling mechanism force is bigger；As shown in Fig. 2, the end of the external piece 7 is equipped with card
Button, the fixing piece 8 are internally provided with and the card slot for buckling and matching so that the external piece 7 is with the fixing piece 8 can
Dismantling connection, and the two can relative rotation can quickly be carried out on other occasions convenient for being installed to the tubing that need to be plugged into
Construction or repair, such as：There is no power supply supply, underwater construction and emergent construction etc..In the present embodiment, described external
The end of part is set there are six buckle, and according to actual needs, buckle can also be designed to other shapes and quantity.
In the present embodiment, the O-ring seal 9 and fixing ring 10 are made of ethylene propylene diene monomer (EPDM) material.Ternary
EP rubbers is the copolymer of ethylene, propylene and a small amount of non-conjugated diene hydrocarbon, is one kind of EP rubbers, because its main chain be by
Chemically stable saturated hydrocarbons composition, only contains unsaturated double-bond in the side chain, therefore the resistances to ag(e)ing such as its resistance to ozone, heat-resisting, weather-proof
Can be excellent, it can be widely used for automobile component, building water-proof material, electric wire and cable jacket, heat-resistant rubber hose, adhesive tape, automobile sealed
The fields such as part.Compared with other common general purpose rubbers or specific rubber, the main performance advantage of ethylene propylene diene rubber be with
Lower several respects：(1) cost-effective, it is the most light common rubber of raw rubber density；(2) excellent anti-aging property, it is resistance to weather, resistance to
The ageing properties such as ozone, resistance to daylight, heat-resisting, water-fast, resistance to vapor, UV resistant, radiation hardness；(3) excellent chemical-resistant resistance
Characteristic, acid and alkali resistance, detergent, vegetable and animals oils, alcohol, ketone etc.；Outstanding water-fast, heat-proof water, water-fast steam performance, resistance to polar oil
Performance；(4) excellent insulation performance；(5) Applicable temperature range is wide.
In addition, the built-in pipe 2 and Puncture Tube 1 are made of chliorinated polyvinyl chloride material.Chliorinated polyvinyl chloride is polychlorostyrene
The further chlorination modified product of ethylene, other than many excellent performances for having polyvinyl chloride concurrently, its corrosion resistance,
Heat resistance, anti-flammability, mechanical strength etc. are greatly improved than polyvinyl chloride, have remarkable high temperature resistant, it is anticorrosive and
Anti-flammability, and compared with other thermoplastic engineering plastics, price is relatively low.Thus, chliorinated polyvinyl chloride is function admirable
New material, be widely used in the fields such as building, chemical industry, metallurgy, shipbuilding, electric appliance, weaving, application prospect is very wide.
In conclusion tubing connecting device described in the utility model is easy to operate, it is only necessary to several steps, and without special
Industry personnel operate, and assist completing without fuse machine or binder；Telescopic stroke is larger, facilitates the urgent of pipe-line system
Repair, can bear certain axial compressive force；It is time saving and energy saving, it is up to 80% or more than traditional connection type saving set-up time；
It can be used in certain special occasions, even if can be operated in no electric power, no binder or inside water；It can plug into
Meet the tubing of the unlike material of national standard nominal diameter；High temperature resistant, still can long-term normal use under 85 DEG C of water temperature conditions.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：
It still can be with technical scheme described in the above embodiments is modified, or is carried out to which part technical characteristic etc.
With replacement；And these modifications or replacements, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (10)
1. a kind of tubing connecting device, which is characterized in that including：Puncture Tube, built-in pipe and the list of plugging into for installing tubing
Member；
The Puncture Tube is sheathed on the built-in pipe, and the Puncture Tube has the freedom relative to the built-in pipe axial displacement
Degree is equipped with sealing ring between the outer wall of the Puncture Tube and the inner wall of the built-in pipe；
The unit of plugging into include the first of the both ends for being divided into the Puncture Tube and the built-in pipe plug into module, second plug into
Module；
One end of the Puncture Tube is connected with the described first module of plugging into, and the other end of the Puncture Tube is free end；
One end of the built-in pipe is connected with the described second module of plugging into, and the other end of the built-in pipe is free end.
2. tubing connecting device according to claim 1, which is characterized in that set between the built-in pipe and the Puncture Tube
It is useful for limiting the axial positioning structure of the displacement to axial of the built-in pipe and Puncture Tube.
3. tubing connecting device according to claim 2, which is characterized in that the axial positioning structure is set to described outer
It sets between the free end of pipe and the free end of the built-in pipe.
4. tubing connecting device according to claim 2 or 3, which is characterized in that the axial positioning structure includes setting
The second limit plane in the first limit plane on the outer wall of the built-in pipe, and on the inner wall of the Puncture Tube.
5. tubing connecting device according to claim 1, which is characterized in that the Puncture Tube is plugged into module with described first
Between be either welded to connect to be threadedly coupled or bonded using glue, the built-in pipe and described second plugs between module and is
It is threadedly coupled and is either welded to connect or is bonded using glue.
6. tubing connecting device according to claim 1, which is characterized in that set on the outer wall of the free end of the built-in pipe
It is useful for placing the groove of the sealing ring.
7. tubing connecting device according to claim 1, which is characterized in that the described first module and described second of plugging into connects
It includes fixing piece, external piece and the sealing element between the fixing piece and the external piece to refute module；
One end of the fixing piece is connect with the Puncture Tube or the built-in pipe, and one end of the fixing piece is arranged outside described
Fitting.
8. tubing connecting device according to claim 7, which is characterized in that the fixing piece is equipped with described close for placing
The groove of sealing,
The sealing element includes being set to fixing ring between the fixing piece and the external piece and being set to the abnormal shape
O-ring seal between sealing ring and external piece.
9. tubing connecting device according to claim 8, which is characterized in that the fixing ring is in be equipped with a ring groove
A fonts, the ring groove on the fixing ring is arranged backwards to the external piece.
10. according to claim 7-9 any one of them tubing connecting devices, which is characterized in that the end of the external piece is set
There are buckle, the inner wall of the fixing piece to be equipped with and the card slot for buckling and matching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820304771.3U CN208074351U (en) | 2018-03-05 | 2018-03-05 | A kind of tubing connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820304771.3U CN208074351U (en) | 2018-03-05 | 2018-03-05 | A kind of tubing connecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208074351U true CN208074351U (en) | 2018-11-09 |
Family
ID=64039655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820304771.3U Active CN208074351U (en) | 2018-03-05 | 2018-03-05 | A kind of tubing connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208074351U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798406A (en) * | 2019-01-24 | 2019-05-24 | 江苏盐电阀门有限公司 | A kind of quick-detachable check-valves |
-
2018
- 2018-03-05 CN CN201820304771.3U patent/CN208074351U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798406A (en) * | 2019-01-24 | 2019-05-24 | 江苏盐电阀门有限公司 | A kind of quick-detachable check-valves |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206861096U (en) | A kind of plastic pipe sealing and connecting device | |
| CN109099246A (en) | A kind of quick coupling | |
| CN208074351U (en) | A kind of tubing connecting device | |
| CN110220049A (en) | Composite metal corrugated pipe with hard seal nipple | |
| CN208859173U (en) | A kind of quick coupling | |
| CN203932890U (en) | A kind of cable flexibility pipe | |
| WO2018103728A1 (en) | Fast connection apparatus | |
| CN117450347A (en) | Chemical industry is with compound ABR pipe and sealing connection structure thereof | |
| CN215000013U (en) | Anticorrosion chemical industry high pressure line connects | |
| CN211083242U (en) | Socket pressing type elbow with flange | |
| CN207609888U (en) | A kind of Novel corrugated pipe joint | |
| CN206320448U (en) | Omnipotent quick connecting device | |
| CN209781907U (en) | A non-bonded flexible pipe for deep water and its connecting joint | |
| CN211853089U (en) | Pipe connection device | |
| CN112325010A (en) | Pipe connecting device for fluid conveying | |
| CN110925502A (en) | Metal hose with good installation tightness | |
| CN100451425C (en) | Expansion joint for pipeline | |
| CN102953975B (en) | A kind of metering pump external pipeline linkage structure | |
| CN210831026U (en) | PVC pipe with additional strengthening | |
| CN222597031U (en) | A stainless steel corrugated pipe for water heating | |
| CN222531261U (en) | Rust-resistant pipe fitting | |
| CN221979124U (en) | A constant temperature antifreeze protection device for waste heat boiler water level gauge | |
| CN214197665U (en) | Pipeline sealing connection structure | |
| CN222597033U (en) | Corrugated hose for fuel gas | |
| CN214999895U (en) | Oxidation-resistant tetrafluoroethylene pipeline |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |