CN205926504U - Pipe cleaning device - Google Patents
Pipe cleaning device Download PDFInfo
- Publication number
- CN205926504U CN205926504U CN201620762972.9U CN201620762972U CN205926504U CN 205926504 U CN205926504 U CN 205926504U CN 201620762972 U CN201620762972 U CN 201620762972U CN 205926504 U CN205926504 U CN 205926504U
- Authority
- CN
- China
- Prior art keywords
- leather cup
- skeleton
- plectane
- sealing device
- wiper
- 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
- Cleaning In General (AREA)
Abstract
The utility model discloses a pipe cleaning device, it includes: skeleton along axis direction extension, sealing device, sealing device includes: set firmly ring flange on the skeleton, the setting is in elastic component on the ring flange, elastic component establishes including the cover the outer leather cup of skeleton, set firmly overlap on the leather cup and establish the outer plectane of skeleton, the outer fringe mask of plectane has the sawtooth opening, the plectane setting is deviating from leather cup open -ended one side. The embodiment of the utility model provides an in the leather cup be not equipped with the sawtooth, the leather cup is complete, has guaranteed pipe cleaning device's whole leakproofness, can prevent effectively that the intertooth space from seriously leaking, solves current reducing pipe cleaning device and leaks the problem, the leather cup sets up the pull rod of slippery fellow, connection slippery fellow and leather cup inner wall on the skeleton through sliding to and slide to set up the elastic element on the skeleton, and adjust the diameter of leather cup through the pull rod, make it to be applicable to in the pipeline of different pipe diameters.
Description
Technical field
This utility model is related to pipe-line technical field, particularly to a kind of wiper.
Background technology
Pipeline can block as the important carrier of oil gas long distance delivery, life-time service.Wiper is clear as machinery
Wash one of equipment of pipeline, pipeline can be cleared up in time and dredge.Wiper passes through gas, liquid or pipeline and is situated between
The promotion of matter is moved in tube chamber, thus being cleaned to tube wall, and and pipeline internal state is monitored.
In petroleum pipeline is built, because a pipelining grade is different, cause pipeline wall thickness different it is easy to make clear
Pipe device can not meet the magnitude of interference of standard requirement, is difficult to be cleared up.In addition with some pipe-lines, by different pipes
Footpath forms, and common wiper cannot meet reducing and require, and be difficult to carry out pigging, and long-time operation often causes pipeline to block up
Plug, impact energy conveying.
Existing variable caliber casing scraper, skeleton two ends, equipped with zigzag leather cup, are arbitrarily entered in pipeline by sawtooth gap
Row compression and expansion, but in use, the between cog poor sealing of leather cup, between cog serious leak often occurs, causes
Pigging not thoroughly the shortcomings of.
Utility model content
In order to overcome at least one in the drawbacks described above of prior art, technical problem to be solved in the utility model is
Provide a kind of wiper, it has preferably cleaning performance.
Concrete technical scheme of the present utility model is：A kind of wiper, it includes：The skeleton extending along an axis direction；
Sealing device, described sealing device includes：It is installed in the ring flange on described skeleton；It is arranged on elastic group on described ring flange
Part, leather cup that described elastic partss include being set in outside described skeleton, is installed on described leather cup and is set in outside described skeleton
Plectane, the outer edge surface of described plectane has sawtooth opening, and described plectane is arranged on the side deviating from described leather cup opening.
Preferably, it is arranged with baffle ring outside described skeleton, described baffle ring is located towards the side of described leather cup opening, described skin
It is provided with pull bar between bowl and described baffle ring.
Preferably, described pull bar is multiple, and multiple pull bars are arranged around the circumferencial direction of described leather cup.
Preferably, described sealing device includes the flexible member being connected with described baffle ring respectively with described pull bar.
Preferably, described flexible member is spring.
Preferably, described sealing device includes the slippery fellow being connected with described flexible member respectively, described cunning with described pull bar
Headgear is located at outside described skeleton.
Preferably, it is provided with linear bearing between described foxy medial wall and the lateral wall of described skeleton.
Preferably, described leather cup and the junction of described pull bar are positioned at the edge of described leather cup.
Preferably, described plectane and/or described leather cup are made up of elastomeric material.
Preferably, described plectane and/or described leather cup are made up of rubber.
Preferably, the angle being formed between the oblique section of sawtooth opening of described plectane and the end face of described plectane is at 10 °
To between 90 °.
Preferably, it is provided with electronic location transmitter in described skeleton.
Preferably, one end of described skeleton is provided with draw ring.
Preferably, described draw ring is in the side that described skeleton deviates from described leather cup opening direction.
Preferably, described sealing device is multiple, and multiple described sealing devices are along the axis direction arrangement of described skeleton.
Preferably, described plectane can radially elastic deformation.
This utility model adopts above structure, has advantages below：
1st, the leather cup in this utility model embodiment is not provided with sawtooth, and leather cup is complete it is ensured that the entirety of wiper
Sealing, can effectively prevent between cog serious leak, solve existing reducing pipe cleaning device leakage problem；Leather cup passes through to be slidably arranged in
The pull bar of the slippery fellow on skeleton, connection slippery fellow and leather cup inwall, and it is slidably arranged in the flexible member on skeleton, by pull bar
To adjust the diameter of leather cup, in the pipeline being allowed to be applied to different tube diameters；In addition, leather cup front end arranges plectane, plectane can lead to
Cross oblique section indentation compression sizes to adjust the diameter of straight panel, be allowed to be applied to the pipeline of different tube diameters, prevent further
Stopping leak leaks, and improves pigging effect.
2nd, between the slippery fellow in this utility model embodiment and skeleton, linear bearing is installed, can reduce foxy and skeleton it
Between frictional force.
3rd, the angle that the section of the oblique section of sawtooth opening of the plectane in this utility model embodiment and plectane is formed is
Between 10 ° to 90 °, plectane can be made according to the different free reducing of caliber, and can ensure that and reached to a certain degree by external force
Forming one afterwards does not have corner angle, the cylinder of sealing, improves cleaning effect.
Brief description
Accompanying drawing described here is only used for task of explanation, and is not intended to limit disclosed in this utility model by any way
Scope.In addition, the shape of each part of in figure and proportional sizes etc. are only schematically, it is used to help to reason of the present utility model
Solution, is not shape and the proportional sizes specifically limiting each part of this utility model.Those skilled in the art is new in this practicality
Under the teaching of type, various possible shapes and proportional sizes can be selected as the case may be to implement this utility model.
Fig. 1 is the structural representation of wiper in this utility model embodiment.
The reference of the figures above is：1st, skeleton；2nd, electronic location transmitter；3rd, first flange disk；4th, second flange
Disk；5th, the first plectane；6th, the first leather cup；7th, the first sawtooth opening；8th, first is foxy；9th, the first pull bar；10th, the first baffle ring；11、
First spring；12nd, the second leather cup；13rd, the second plectane；14th, the second sawtooth opening；15th, the second baffle ring；16th, second is foxy；17、
Second pull bar；18th, second spring；19th, first straight line bearing；20th, second straight line bearing；21st, draw ring.
Specific embodiment
In conjunction with the description of accompanying drawing and this utility model specific embodiment, can clearly understand of the present utility model
Details.But, specific embodiment of the present utility model described here, it is only used for explaining the purpose of this utility model, and not
Can be understood as by any way being to restriction of the present utility model.Under teaching of the present utility model, technical staff is contemplated that
Based on arbitrarily possible deformation of the present utility model, these are regarded as belonging to scope of the present utility model.
It should be noted that when element is referred to as " being arranged at " another element, it can be directly on another element
Or can also there is element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or may be simultaneously present centering elements.Term as used herein " vertical ", " level ", " left ",
For illustrative purposes only, being not offered as is unique embodiment for " right " and similar statement.
Unless otherwise defined, all of technology used herein and scientific terminology and the technical field belonging to the application
The implication that technical staff is generally understood that is identical.Term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body is it is not intended that in limiting the application.Term as used herein "and/or" includes one or more
The arbitrary and all of combination of related Listed Items.
This application discloses a kind of wiper, it includes：The skeleton 1 extending along an axis direction；Sealing device, described close
Seal apparatus include：It is installed in the ring flange on described skeleton 1；It is arranged on the elastic partss on described ring flange, described elasticity group
Leather cup that part includes being set in outside described skeleton 1, it is installed on described leather cup and is set in the plectane outside described skeleton 1, described
The outer edge surface of plectane has sawtooth opening, and described plectane is arranged on the side deviating from described leather cup opening.
Because the plectane in the application and described leather cup are made up of other elastomeric materials such as rubber, therefore the application
In wiper along during duct chamber indoor sport, plectane can first pass through the saw with oblique section being disposed thereon
Tooth opening to produce radially elastic deformation, that is, adjusts the diameter of plectane, so that plectane is applied to the pipeline of different tube diameters,
Compared to wiper of the prior art, the plectane in the application improves the sealing of wiper further.Meanwhile, in the application
Middle leather cup is complete, leather cup is not provided with opening it is ensured that the overall tightness of wiper, can effectively prevent between cog serious
Leakage, solves existing reducing pipe cleaning device leakage problem.
Specifically, in the present embodiment, wiper includes two sealing devices, and two sealing devices are along the axle of skeleton 1
Arrange in line direction.Certain, sealing device can be based on concrete practical situation and actual sealing effectiveness and seal request Lai really
Determine the quantity of sealing device.For example, in other optional embodiments, sealing device can for one, three, four, very
To more etc..
In the present embodiment, the sealing device on the left of Fig. 1 is first sealing device, the sealing on the right side of Fig. 1
Device is the second sealing device.
First sealing device includes the first flange disk 3 being set in outside skeleton 1.First bullet is provided with first flange disk 3
Property assembly.First elastic partss include the first leather cup 6 being set in outside skeleton 1 and the first plectane 5 being set in outside skeleton 1.The
One plectane 5 is located between first flange disk 3 and the first leather cup 6, and the first plectane 5 and the first leather cup 6 are bolted on first
On ring flange 3.The sawtooth opening that multiple (such as 100) have oblique section is provided with the end face of the first plectane 5.Preferably,
The angle being formed between the oblique section of the first sawtooth opening 7 and the end face of plectane is between 10 ° to 90 °, so that the first plectane 5
According to the different free reducing of caliber, and can ensure that there is no corner angle, sealing being reached to a certain degree formation one afterwards by external force
Cylinder, improve cleaning effect.
Described first sealing device also includes the first slippery fellow 8 being set on skeleton 1.First slippery fellow 8 can be along the axle of skeleton 1
Slide in line direction.Preferably, it is provided with first straight line bearing 19 between first foxy 8 and skeleton 1, that is, first straight line bearing 19 sets
Put in the medial wall of the first slippery fellow 8 between the lateral wall of skeleton 1, first straight line bearing 19 can reduce first foxy 8 and bone
Frictional force between frame 1.
In the present embodiment, it is provided with multiple first pull bars 9 between the left end of the first slippery fellow 8 and leather cup.Multiple first
Pull bar 9 can be arranged around the circumferencial direction of the first leather cup 6., so that the first leather cup 6 homogeneous deformation.First pull bar 9 is sliding away from first
8 one end (i.e. in figure left part) is connected with the inwall of the first leather cup 6.In order that the change mass runoff of the first leather cup 6 is big, and become
Footpath response time is short, and the junction of described leather cup and described pull bar is located at the inner wall edge of described leather cup, so that the first leather cup 6
Uniform diameter changes, and prevents from blocking pipeline.
First sealing device also includes being fixedly installed on skeleton 1 and being set in the first baffle ring 10 on skeleton 1.First gear
Ring 10 is located at the side towards leather cup opening.It is provided with the first spring 11, i.e. the first bullet between first baffle ring 10 and the first slippery fellow 8
The left end of spring 11 is connected with first foxy 8, and the right-hand member of the first spring 11 is connected with the first baffle ring 10.Certain, optional at other
Embodiment in, can arrange between the first baffle ring 10 and the first slippery fellow 8 to provide other flexible members of reset force.
Similarly, the second sealing device includes the second flange disk 4 being set in outside skeleton 1.It is provided with second flange disk 4
Second elastic partss.Second elastic partss include the second leather cup 12 being set in outside skeleton 1 and the second circle being set in outside skeleton 1
Plate 13.Second plectane 13 is located between second flange disk 4 and the second leather cup 12, and the second plectane 13 and the second leather cup 12 pass through bolt
It is fixed on second flange disk 4.The sawtooth that multiple (such as 100) have oblique section is provided with the end face of the second plectane 13 open
Mouthful.Preferably, between the oblique section of the second sawtooth opening 14 and the end face of plectane formed angle between 10 ° to 90 °, thus
Make the second plectane 13 according to the different free reducing of caliber, and can ensure that do not have being reached to a certain degree formation one afterwards by external force
There are corner angle, the cylinder of sealing, improve cleaning effect.
Described second sealing device also includes the second slippery fellow 16 being set on skeleton 1.Second slippery fellow 16 can be along skeleton 1
Axis direction slides.Preferably, it is provided with second straight line bearing 20 between second foxy 16 and skeleton 1, i.e. second straight line bearing
20 are arranged on the medial wall of the second slippery fellow 16 between the lateral wall of skeleton 1, and it is foxy that second straight line bearing 20 can reduce second
Frictional force between 16 and skeleton 1.
In the present embodiment, it is provided with multiple second pull bars 17 between the left end of the second slippery fellow 16 and leather cup.Multiple
Two pull bars 17 can be arranged around the circumferencial direction of the second leather cup 12, so that the second leather cup 12 homogeneous deformation.Second pull bar 17 away from
One end (i.e. in figure left part) of second slippery fellow 16 is connected with the inwall of the second leather cup 12.In order that the change mass runoff of the second leather cup 12
Greatly, and reducing response time is short, the junction of described leather cup and described pull bar is located at the inner wall edge of described leather cup, so that
Second leather cup 12 uniform diameter changes, and prevents from blocking pipeline.
Second sealing device also includes being fixedly installed on skeleton 1 and being set in the second baffle ring 15 on skeleton 1.Second gear
Ring 15 is located at the side towards leather cup opening.It is provided with second spring 18 between second baffle ring 15 and the second slippery fellow 16, that is, second
The left end of spring 18 is connected with second foxy 16, and the right-hand member of second spring 18 is connected with the second baffle ring 15.
The operation principle of the present embodiment is substantially as follows, and the caliber of the pipeline residing for when wiper becomes hour, the first plectane 5 He
Second plectane 13 can be compacted the first sawtooth opening 7, the second sawtooth opening 14 respectively, the first plectane 5 and the second plectane 13 diameter
Diminish, pipeline can be passed through；And, the first leather cup 6 and the second leather cup 12 are under the pressure of duct wall, promote the first slippery fellow
8 and second foxy 16 slip, now the first spring 11 and second spring 18 are compressed, the first leather cup 6 and the second leather cup 12 diameter
Diminish, pass through pipeline in the presence of pressure differential, pigging effect is good.When pipe diameter residing for when wiper becomes big, the
One plectane 5 and the second plectane 13, under natural resiliency active force, can flick a part of first oblique section indentation and second
Oblique section indentation, thus the first plectane 5 and the second plectane 13 diameter become big, is close to inner-walls of duct, pigging effect is good；And
And, because caliber becomes big, the first spring 11 being compressed and second spring 18 are gradually recovered under the elastic force of itself, promote first
Foxy 8 and second foxy 16 slip, the first leather cup 6 and the second leather cup 12 diameter become big, the first leather cup 6 and the second leather cup 12 edge
When contacting with inner-walls of duct, the first pull bar 9 and the second pull bar 17 stop sliding, and pipeline is close to by the first leather cup 6 and the second leather cup 12
Inwall, pigging effect is good.
Preferably, it is provided with electronic location transmitter 2 in described skeleton 1.Electronic location transmitter 2 adopts common batteries to supply
Electricity, during work, it persistently launches stable low frequency pulse signal, with the electronic location receptor on ground collectively form electronics with
Track monitoring system, the work to wiper is monitored.
Preferably, one end of described skeleton 1 is provided with draw ring 21.Particularly, described draw ring 21 is in described skeleton 1 and deviates from
The side of described leather cup opening direction, easily wiper to be pulled out in pipeline.
Preferably, in the present embodiment, first sealing device is identical with the structure of the second sealing device, so that first
Sealing device and the second sealing device smooth by pipeline.
This utility model adopts above structure, has advantages below：
1st, the leather cup in this utility model embodiment is not provided with sawtooth, and leather cup is complete it is ensured that the entirety of wiper
Sealing, can effectively prevent between cog serious leak, solve existing reducing pipe cleaning device leakage problem；Leather cup passes through to be slidably arranged in
The pull bar of the slippery fellow on skeleton 1, connection slippery fellow and leather cup inwall, and it is slidably arranged in the flexible member on skeleton 1, by drawing
Bar adjusting the diameter of leather cup, in the pipeline that is allowed to be applied to different tube diameters；In addition, leather cup front end arranges plectane, plectane is permissible
Adjust the diameter of straight panel by oblique section indentation compression sizes, be allowed to be applied to the pipeline of different tube diameters, further
Prevent leakage, improves pigging effect.
2nd, between the slippery fellow in this utility model embodiment and skeleton 1, linear bearing is installed, foxy and skeleton 1 can be reduced
Between frictional force.
3rd, the angle that the section of the oblique section of sawtooth opening of the plectane in this utility model embodiment and plectane is formed is
Between 10 ° to 90 °, plectane can be made according to the different free reducing of caliber, and can ensure that and reached to a certain degree by external force
Forming one afterwards does not have corner angle, the cylinder of sealing, improves cleaning effect.
It should be noted that in the description of the present application, term " first ", " second " etc. are only used for describing purpose and difference
, not there is sequencing between the two in similar object, nor be interpreted as indicating or imply relative importance.Additionally,
In the description of the present application, unless otherwise stated, " multiple " are meant that two or more.
Each embodiment in this specification is all described by the way of going forward one by one, what each embodiment stressed be with
The difference of other embodiment, between each embodiment identical similar partly mutually referring to.
Above-described embodiment is only that technology design of the present utility model and feature are described, its object is to allow and is familiar with technique
Personage will appreciate that content of the present utility model and implement according to this, protection domain of the present utility model can not be limited with this.
All equivalence changes made according to this utility model spirit or modification, all should cover protection domain of the present utility model it
Interior.
Claims (16)
1. a kind of wiper is it is characterised in that it includes：
The skeleton extending along an axis direction；
Sealing device, described sealing device includes：
It is installed in the ring flange on described skeleton；
It is arranged on the elastic partss on described ring flange, leather cup that described elastic partss include being set in outside described skeleton, fixed
On described leather cup and be set in plectane outside described skeleton, the outer edge surface of described plectane has sawtooth opening, and described plectane sets
Put in the side deviating from described leather cup opening.
2. it is characterised in that being arranged with baffle ring outside described skeleton, described baffle ring is located at wiper according to claim 1
Towards the side of described leather cup opening, between described leather cup and described baffle ring, it is provided with pull bar.
3., it is characterised in that described pull bar is multiple, multiple pull bars are around described leather cup for wiper according to claim 2
Circumferencial direction arrangement.
4. the wiper according to Claims 2 or 3 it is characterised in that described sealing device include respectively with described pull bar
The flexible member being connected with described baffle ring.
5. wiper according to claim 4 is it is characterised in that described flexible member is spring.
6. wiper according to claim 3 it is characterised in that described sealing device include respectively with described pull bar and institute
State the slippery fellow of flexible member connection, described slippery fellow is set in outside described skeleton.
7. wiper according to claim 6 is it is characterised in that the lateral wall of described foxy medial wall and described skeleton
Between be provided with linear bearing.
8. wiper according to claim 2 it is characterised in that the junction of described leather cup and described pull bar be located at described
The edge of leather cup.
9. wiper according to claim 1 is it is characterised in that described plectane and/or described leather cup are by elastomeric material system
Become.
10. the wiper according to claim 1 or 9 is it is characterised in that described plectane and/or described leather cup are by rubber system
Become.
11. wipers according to claim 1 it is characterised in that the oblique section of sawtooth opening of described plectane with described
The angle being formed between the end face of plectane is between 10 ° to 90 °.
12. wipers according to claim 1 are it is characterised in that be provided with electronic location transmitter in described skeleton.
13. wipers according to claim 1 are it is characterised in that one end of described skeleton is provided with draw ring.
14. wipers according to claim 13 deviate from described leather cup it is characterised in that described draw ring is in described skeleton
The side of opening direction.
It is characterised in that described sealing device is multiple, multiple described sealings fill 15. wipers according to claim 1
Put the axis direction arrangement along described skeleton.
16. wipers according to claim 1 are it is characterised in that described plectane can radially elastic deformation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620762972.9U CN205926504U (en) | 2016-07-19 | 2016-07-19 | Pipe cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620762972.9U CN205926504U (en) | 2016-07-19 | 2016-07-19 | Pipe cleaning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205926504U true CN205926504U (en) | 2017-02-08 |
Family
ID=57925678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620762972.9U Active CN205926504U (en) | 2016-07-19 | 2016-07-19 | Pipe cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205926504U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107413783A (en) * | 2017-06-01 | 2017-12-01 | 广西金茂生物化工有限公司 | Cleaning equipment in a kind of heat exchange tube |
| CN109158390A (en) * | 2018-10-19 | 2019-01-08 | 董志彬 | pipeline cleaner |
| CN109226128A (en) * | 2018-10-29 | 2019-01-18 | 西南石油大学 | A kind of vane type pipe cleaner of intelligent speed-control |
| CN110076148A (en) * | 2019-05-17 | 2019-08-02 | 常州大学 | A kind of variable caliber casing scraper of intelligentized control method |
| CN114192520A (en) * | 2021-12-03 | 2022-03-18 | 江苏永诚装备科技有限公司 | Automatic clear up pigging device for natural gas line of waste residue |
| CN115178544A (en) * | 2022-05-06 | 2022-10-14 | 西南石油大学 | Intelligent pipe cleaner with soft framework |
-
2016
- 2016-07-19 CN CN201620762972.9U patent/CN205926504U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107413783A (en) * | 2017-06-01 | 2017-12-01 | 广西金茂生物化工有限公司 | Cleaning equipment in a kind of heat exchange tube |
| CN107413783B (en) * | 2017-06-01 | 2023-12-15 | 广西金茂生物化工有限公司 | Cleaning equipment in heat exchange tube |
| CN109158390A (en) * | 2018-10-19 | 2019-01-08 | 董志彬 | pipeline cleaner |
| CN109226128A (en) * | 2018-10-29 | 2019-01-18 | 西南石油大学 | A kind of vane type pipe cleaner of intelligent speed-control |
| CN110076148A (en) * | 2019-05-17 | 2019-08-02 | 常州大学 | A kind of variable caliber casing scraper of intelligentized control method |
| CN110076148B (en) * | 2019-05-17 | 2022-03-25 | 常州大学 | Intelligently-controlled diameter-variable pipe cleaner |
| CN114192520A (en) * | 2021-12-03 | 2022-03-18 | 江苏永诚装备科技有限公司 | Automatic clear up pigging device for natural gas line of waste residue |
| CN115178544A (en) * | 2022-05-06 | 2022-10-14 | 西南石油大学 | Intelligent pipe cleaner with soft framework |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205926504U (en) | Pipe cleaning device | |
| CN206973143U (en) | A kind of Chemical Pipeline Protecting Jacket | |
| CN203044448U (en) | Reducing pipe cleaning device | |
| CN204785051U (en) | Novel antiseep push pipe | |
| CN206943631U (en) | A kind of vacuum sealing tube telescopic with adaptive guard function | |
| US20160169427A1 (en) | Flange joint containment device | |
| CN109654315A (en) | A kind of Petrochemical Pipe Joints | |
| CN207750631U (en) | A kind of liquid interface tube device for plugging | |
| CN203442341U (en) | Seal ring for through-wall galvanized pipe | |
| CN204852691U (en) | Hoop | |
| CN209524166U (en) | Steel strip reinforced pipe connections | |
| CN113404950B (en) | Overlap joint flange | |
| CN209705476U (en) | A kind of composite double layer seals | |
| CN203189917U (en) | Double-rubber-ring soft sealing joint municipal drain pipe | |
| CN203375024U (en) | Pipeline flange | |
| CN215950610U (en) | Water stop structure of wall-penetrating large-diameter glass fiber reinforced plastic pipeline | |
| CN209494016U (en) | A kind of municipal works drainpipe connecting apparatus | |
| CN204647693U (en) | A kind of large extending amount piecing devices | |
| CN211176334U (en) | Pipeline leakage point detection device | |
| CN204042301U (en) | For the joint connection of automobile pipeline | |
| CN215866677U (en) | Water level changing device suitable for model test | |
| CN205173845U (en) | Self -energized seal device under water | |
| CN207691361U (en) | A kind of service-strong work well cable protection pipe | |
| CN219932953U (en) | Sealing structure for preventing oil leakage at tail of grinding roller of vertical mill | |
| CN217177777U (en) | Rubber seal ring for water pipe connection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |