CN207953587U - Pump line outer wall decontamination apparatus - Google Patents
Pump line outer wall decontamination apparatus Download PDFInfo
- Publication number
- CN207953587U CN207953587U CN201721918495.1U CN201721918495U CN207953587U CN 207953587 U CN207953587 U CN 207953587U CN 201721918495 U CN201721918495 U CN 201721918495U CN 207953587 U CN207953587 U CN 207953587U
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- CN
- China
- Prior art keywords
- pump line
- carrying roller
- driving wheel
- decontamination
- frustum
- 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.)
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Abstract
The utility model provides a kind of pump line outer wall decontamination apparatus,Belong to rust removalling equipment technical field,Including pump line conveying mechanism and sandblasting decontamination mechanism,Sandblasting decontamination mechanism is located at the middle part of pump line conveying mechanism,Pump line conveying mechanism includes holder,The carrying roller unit and power plant of n arranged in rows,Carrying roller unit includes the frustum carrying roller that pump line is transported for support,Roll shaft for driving frustum carrying roller to rotate,The first driving wheel and the second driving wheel for drive roller shaft rotation,The angle of the main shaft of roll shaft and the direction of travel of pump line is acute angle,Power plant is connect with the first driving wheel of first carrying roller unit,First driving wheel of the n-th 1 carrying roller units is connect with the second driving wheel of n-th of carrying roller unit,Frustum carrying roller,First driving wheel and the second driving wheel are fixedly connected with roll shaft,Roll shaft is connect with holder pivots.The utility model can be obviously improved decontamination efficiency and effect, will not damage pump tube outer surface, can save a large amount of artificial.
Description
Technical field
The utility model belongs to rust removalling equipment technical field, is to be related to a kind of pump line outer wall decontamination apparatus more specifically.
Background technology
In pump line production process, before carrying out spray painting or baking vanish process, need to carry out at decontamination the outer surface of pump line
Reason, to remove the rust staining, welding slag or the pollutant of other adherency of the outer surface of pump line.Traditional derusting method is to rely on manually to adopt
It is polished with steel brush, scraper or angle grinder, cleaning is not thorough, and is also easy to cause to damage to pump line itself, pump line after polishing
Outer surface has also adhered to a large amount of powder, it is also necessary to blow down again, effect is poor, and inefficiency, labor intensive.
Utility model content
The purpose of this utility model is to provide a kind of pump line outer wall decontamination apparatus, to solve pump existing in the prior art
The technical issues of tube outer surface scavenging effect difference and inefficiency, decontamination efficiency and effect can be obviously improved, will not damage by having
Hinder pump line outer surface, save artificial feature.
To achieve the above object, the technical solution adopted in the utility model is：A kind of pump line outer wall decontamination apparatus is provided, is wrapped
Pump line conveying mechanism and sandblasting decontamination mechanism are included, the sandblasting decontamination mechanism is located at the middle part of the pump line conveying mechanism, described
Pump line conveying mechanism includes holder, the carrying roller unit of n arranged in rows and for driving the power of the carrying roller unit rotational to fill
It sets, the carrying roller unit includes frustum carrying roller, the roller for driving the frustum carrying roller rotation for transporting pump line for support
Axis, the first driving wheel for driving the roll shaft rotation and second for driving the roll shaft of adjacent carrying roller unit to rotate pass
Driving wheel, the main shaft of the roll shaft and the angle of the direction of travel of the pump line are acute angle, the power plant and first support
First driving wheel of roller unit connects, the second driving wheel of the first driving wheel and n-th of carrying roller unit of (n-1)th carrying roller unit
Connection, the frustum carrying roller, first driving wheel and second driving wheel are fixedly connected with the roll shaft, the roll shaft
It is connect with the holder pivots.
Further, further include feed mechanism and material receiving mechanism, the feeder in pump line outer wall decontamination apparatus above-mentioned
Structure and material receiving mechanism are respectively perpendicular the both ends for being located at the pump line conveying mechanism.
Further, in pump line outer wall decontamination apparatus above-mentioned, the height of the material receiving mechanism is less than the frustum carrying roller
Height, the material receiving mechanism is equipped with the guide groove of the direction of travel for changing the pump line, and the guide groove includes perpendicular
The arc panel and fixed pressing plate vertical with the inside plate face of the arc panel being directly arranged, the pressing plate is by pump line conveying mechanism
It is highly continuously decreased on to the direction of material receiving mechanism.
Further, in pump line outer wall decontamination apparatus above-mentioned, the sandblasting decontamination mechanism includes shell, is respectively provided at shell
The inlet port and outlet port of body both sides and enclosure interior is located at for spraying the sand jet outlet of steel sand.
Further, in pump line outer wall decontamination apparatus above-mentioned, the inlet port and outlet port of the sandblasting decontamination mechanism are equal
Equipped with the flexible baffle ring for preventing steel sand from escaping, the flexibility baffle ring outer rim is fixed on the feed inlet and the discharge port
On, inner edge is equipped with the gear tooth to the sandblasting decontamination mechanism inner inclination.
Further, in pump line outer wall decontamination apparatus above-mentioned, the frustum carrying roller stretches out the holder, and the sandblasting removes
Dirty mechanism is located at the side of the pump line conveying mechanism, and several frustum carrying rollers are located inside the sandblasting decontamination mechanism, institute
The sand jet outlet for stating sandblasting decontamination mechanism is respectively positioned on the top of the frustum carrying roller.
Further, in pump line outer wall decontamination apparatus above-mentioned, between the power plant and first driving wheel, institute
It is belt transmission, chain drive or gear drive to state between the first driving wheel and second driving wheel.
Further, in pump line outer wall decontamination apparatus above-mentioned, the traveling side of the main shaft of the roll shaft and the pump line
To angle be 30 °~60 °.
Further, in pump line outer wall decontamination apparatus above-mentioned, the feed mechanism and the material receiving mechanism are carrying roller
Delivery platform.
Further, in pump line outer wall decontamination apparatus above-mentioned, the roll shaft is connect by two bearings with the holder,
First driving wheel and second driving wheel are between described two bearings.
The advantageous effect of pump line outer wall decontamination apparatus provided by the utility model is：Compared with prior art, this practicality
It is novel to be combined with pump line conveying mechanism using sandblasting decontamination mechanism, it is carried out certainly using the impact of steel sand and the vibrations of pump line itself
Dynamic decontamination, clears up totally thorough, avoids steel brush, scraper equivalent damage pump line outer surface, without blowing down dirt again, decontamination
Efficiency and effect can be obviously improved, and spray painting or baking vanish process can be directly being carried out after cleaning, be saved a large amount of artificial；
Meanwhile using the frustum carrying roller with the direction of travel of pump line with angle, pump line can be driven to advance and pump line is driven to turn
It is dynamic, so that pump line is cleared up in all directions in sandblasting decontamination mechanism, improves cleaning effect；In addition between carrying roller unit mutually
Transmission is not only improved the synchronous rotation for ensureing frustum carrying roller, in turn avoids being driven using a large amount of power plants, reduce and make
Valence saves production cost.
Description of the drawings
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this practicality is new
Some embodiments of type for those of ordinary skill in the art without having to pay creative labor, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the overlooking structure diagram for the pump line outer wall decontamination apparatus that the utility model embodiment provides；
Fig. 2 is the structural schematic diagram of the carrying roller unit for the pump line outer wall decontamination apparatus that the utility model embodiment provides；
Fig. 3 is the front view structure signal at the guide groove position for the pump line outer wall decontamination apparatus that the utility model embodiment provides
Figure；
Fig. 4 is the front view structure signal of the flexible baffle ring for the pump line outer wall decontamination apparatus that the utility model embodiment provides
Figure；
The overlooking structure diagram of the flexible baffle ring for the pump line outer wall decontamination apparatus that Fig. 5 the utility model embodiments provide.
Wherein, each reference numeral in figure：
10- feed mechanisms；
20- holders；21- bearings；
30- carrying roller units；31- frustum carrying rollers；32- roll shafts；The first driving wheels of 33-；The second driving wheels of 34-；
40- power plants；
50- sandblasting decontamination mechanisms；51- flexibility baffle rings；52- keeps off tooth；
60- material receiving mechanisms；
70- guide grooves；71- arc panels；72- pressing plates；
80- pump lines.
Specific implementation mode
In order to make technical problem to be solved in the utility model, technical solution and advantageous effect be more clearly understood, with
Lower combination accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific reality described herein
Example is applied only to explain the utility model, is not used to limit the utility model.
It should be noted that when element is referred to as " being fixed on " or " being set to " another element, it can be directly another
On one element or it is connected on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
It is to be appreciated that term " length ", " width ", "upper", "lower", "front", "rear", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" "inner", "outside" is that orientation based on ... shown in the drawings or position are closed
System, is merely for convenience of describing the present invention and simplifying the description, does not indicate or imply the indicated device or element is necessary
With specific orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more this feature.The meaning of " plurality " is two or two in the description of the present invention,
More than, unless otherwise specifically defined.
Also referring to Fig. 1 and Fig. 2, now pump line outer wall decontamination apparatus provided by the utility model is illustrated.It is described
Pump line outer wall decontamination apparatus, including pump line conveying mechanism and sandblasting decontamination mechanism 50, sandblasting decontamination mechanism 50 are located at pump line conveying
The middle part of mechanism, pump line conveying mechanism include holder 20, the carrying roller unit 30 of n arranged in rows and for driving carrying roller unit 30
The power plant 40 of rotation, carrying roller unit 30 include transporting the frustum carrying roller 31 of pump line 80, for driving frustum for support
Carrying roller 31 rotate roll shaft 32, for drive roller shaft 32 rotate the first driving wheel 33 and for driving adjacent carrying roller unit 30
The second driving wheel 34 that rotates of roll shaft 32, the angle of the main shaft of roll shaft 32 and the direction of travel of pump line 80 is acute angle, power
Device 40 is connect with the first driving wheel 33 of first carrying roller unit 30, the first driving wheel 33 of (n-1)th carrying roller unit 30 with
The second driving wheel 34 connection of n-th carrying roller unit 30, frustum carrying roller 31, the first driving wheel 33 and the second driving wheel 34 are and roller
Axis 32 is fixedly connected, and roll shaft 32 is rotatablely connected with holder 20.
Before use, power plant 40 is connect with the first driving wheel 33 of first carrying roller unit 30 to transmit power, first
Second driving wheel 34 of a carrying roller unit 30 is connect with the first driving wheel 33 of second carrying roller unit 30 to continue to transmit power,
Second driving wheel 34 of second carrying roller unit 30 is connect with the first driving wheel 33 of third carrying roller unit 30 to continue to transmit
Power, and so on, until the first driving wheel of the second driving wheel 34 and n-th of carrying roller unit 30 of n-1 carrying roller unit 30
33 connections.In use, pump line 80 is placed on frustum carrying roller 31, frustum carrying roller 31 drives pump line 80 to pass through sandblasting decontamination mechanism
50, it is decontaminated.
Pump line outer wall decontamination apparatus provided by the utility model, compared with prior art, using sandblasting decontamination mechanism 50 with
Pump line conveying mechanism is combined, and is carried out automatic pollution removing using the impact of steel sand and the vibrations of pump line 80 itself, is cleared up totally thorough
Bottom avoids steel brush, scraper equivalent damage pump line outer surface, and without blowing down dirt again, the efficiency and effect of decontamination can obtain
It is obviously improved, spray painting or baking vanish process can be directly being carried out after cleaning, save a large amount of artificial；Meanwhile using with pump line 80
Direction of travel have angle frustum carrying roller 31, can drive pump line 80 advance and drive pump line 80 rotate, make pump line 80
It is cleared up in all directions in sandblasting decontamination mechanism 50, improves cleaning effect；In addition it is driven mutually between carrying roller unit 30,
The synchronous rotation for ensureing frustum carrying roller 31 is not only improved, in turn avoids being driven using a large amount of power plants 40, reduces and make
Valence saves production cost.
Further, referring to Fig. 1, a kind of specific implementation as pump line outer wall decontamination apparatus provided by the utility model
Mode further includes feed mechanism 10 and material receiving mechanism 60, and feed mechanism 10 and material receiving mechanism 60, which are respectively perpendicular, is located at pump line conveying
The both ends of mechanism.Feed mechanism 10 and the direction for being primarily referred to as feeding and discharging vertical with pump line conveying mechanism of material receiving mechanism 60
It is vertical with the direction of advance of pump line 80 in pump line conveying mechanism.Since the general length of pump line is longer, if all process steps all words
It arranges, the entire production line will be very long, and the requirement to workshop is larger, so generally requiring manually between each process to pump line 80
It is transported through.Feed mechanism 10 and material receiving mechanism 60 it is vertical with pump line conveying mechanism can be convenient for so that production line is turned, shorten life
The length of producing line reduces the requirement to workshop, is conducive to the space for rationally utilizing workshop.Due to the main shaft and pump line of roll shaft 32
80 direction of travel has angle, and feeding and splicing are carried out to pump line conveying mechanism by feed mechanism 10 and material receiving mechanism 60
When, it is turned to, can be commutated to pump line 80 convenient and strength-savingly by riding over to rotate pump line 80 on a frustum carrying roller 31.
Further, also referring to Fig. 1 and Fig. 3, one as pump line outer wall decontamination apparatus provided by the utility model
Kind of specific implementation mode, the height of material receiving mechanism 60 are less than the height of frustum carrying roller 31, material receiving mechanism 60 be equipped with for changing
The guide groove 70 of the direction of travel of pump line 80, guide groove 70 include the arc panel 71 being vertically arranged and the interior plate with arc panel 71
Vertically fixed pressing plate 72, pressing plate 72 highly continuously decrease on by pump line conveying mechanism to the direction of material receiving mechanism 60 in face.Pump
Pipe 80 under the promotion of frustum carrying roller 31 along straight ahead until one end enters guide groove 70, pump line 80 contacts fast after arc panel 71
Quick access presses plate 72, and pump line 80 continues to shore arc panel 71 under the promotion of frustum carrying roller 31 and 72 lower surface of pressing plate is slided,
And then one end of the contact arc panel 71 of pump line 80 is depressed by pressing plate 72, by lever principle, pump line 80 is with the last one frustum support
Roller 31 is fulcrum, and the other end tilts, and pump line 80 is detached from other frustum carrying rollers 31, in the collective effect of frustum carrying roller 31 and gravity
Under, one end that pump line 80 contacts arc panel 71 is moved on along guide groove 70 is continued, until falling on material receiving mechanism 60.Using
Guide groove 70 can make 80 auto-steering of pump line, save the manpower of rotation pump line 80, improve productivity effect.
Further, a kind of specific implementation mode as pump line outer wall decontamination apparatus provided by the utility model, sandblasting
Decontamination mechanism 50 includes shell, is respectively provided at the inlet port and outlet port of shell both sides and is located at enclosure interior for spraying steel
The sand jet outlet of sand.Sandblasting decontamination mechanism 50 can be the abrasive blasting rust-cleaning machine of conversion.
Further, also referring to Fig. 1, Fig. 4 and Fig. 5, as pump line outer wall decontamination apparatus provided by the utility model
A kind of specific implementation mode, the inlet port and outlet port of sandblasting decontamination mechanism 50 are equipped with the flexibility for preventing steel sand from escaping
Baffle ring 51,51 outer rim of flexible baffle ring are fixed in inlet port and outlet port, and inner edge is equipped with to 50 inner inclination of sandblasting decontamination mechanism
Gear tooth 52, when preventing pump line 80 from passing through, gear tooth 52 expansion so that steel sand is escaped.When pump line 80 is passed through by discharge port, tooth is kept off
52 are pushed by pump line 80 outside sandblasting decontamination mechanism 50, when pump line 80 is passed fully through by discharge port, gear tooth 52 and sandblasting of rebounding
Inside decontamination mechanism 50.
Further, referring to Fig. 1, a kind of specific implementation as pump line outer wall decontamination apparatus provided by the utility model
Mode, frustum carrying roller 31 stretch out holder 20, and sandblasting decontamination mechanism 50 is located at the side of pump line conveying mechanism, several frustum carrying rollers 31
Inside sandblasting decontamination mechanism 50, in order to whole plus residence time of the pump line 80 in sandblasting decontamination mechanism 50, play more preferable
Ground scavenging effect, while preventing pump line 80 from falling in sandblasting decontamination mechanism 50.The sand jet outlet of sandblasting decontamination mechanism 50 is respectively positioned on
The top of frustum carrying roller 31, to mitigate abrasion of the steel sand to frustum carrying roller 31.
Further, referring to Fig. 1, a kind of specific implementation as pump line outer wall decontamination apparatus provided by the utility model
Mode, be between power plant 40 and the first driving wheel 33, between the first driving wheel 33 and the second driving wheel 34 belt transmission,
Chain drive or gear drive are driven effect well to provide.
Further, referring to Fig. 1, a kind of specific implementation as pump line outer wall decontamination apparatus provided by the utility model
Mode, the main shaft of roll shaft 32 and the angle of the direction of travel of pump line 80 are 30 °~60 °, and the preferably angle is 45 °.When the folder
When angle is excessive, main shaft and the direction of travel of pump line 80 of roll shaft 32 level off to vertical, and the velocity of rotation of pump line 80 is slower, it is difficult to
Effectively cleared up；When the angle is too small, main shaft and the direction of travel of pump line 80 of roll shaft 32 level off to it is parallel, it is adjacent
For carrying roller unit 30 apart from relatively closely, identical length needs more carrying roller unit 30, or needs the roll shaft 32 of carrying roller unit 30
It is longer, whole it can add production cost, while carrying roller unit 30 being made to be difficult to arrange, it is not only uneconomical but also uneconomical.The main shaft of roll shaft 32
It should consider the length and diameter of pump line 80, the rotating speed of frustum carrying roller 31 and spray with the angle of the direction of travel of pump line 80
The blasting treatment length of sand decontamination mechanism 50, keeps the gait of march of pump line 80 suitable, and makes the length of pump line 80 traveling and pump line 80
Spend it is equal apart from when, pump line 80 rotates one week at least in the blasting treatment length range of sandblasting decontamination mechanism 50.
Further, a kind of specific implementation mode as pump line outer wall decontamination apparatus provided by the utility model, feeding
Mechanism 10 and material receiving mechanism 60 are carrying roller delivery platform, in order to convey material.Feed mechanism 10 and material receiving mechanism 60 can be with
Only it is storing platform.
Further, referring to Fig. 1, a kind of specific implementation as pump line outer wall decontamination apparatus provided by the utility model
Mode, roll shaft 32 are connect by two bearings 21 with holder 20, and the first driving wheel 33 and the second driving wheel 34 are located at two bearings
Between 21.The stability of carrying roller unit 30 can be promoted between two bearings 21 with certain distance, while can be driven to first
Wheel 33 and the second driving wheel 34 play the role of protection and limit, prevent the body of operating personnel or clothing from accidentally touching, cause danger,
Also it can prevent belt or chain from loosening.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model
Protection domain within.
Claims (10)
1. a kind of pump line outer wall decontamination apparatus, it is characterised in that：Including pump line conveying mechanism and sandblasting decontamination mechanism, the sandblasting
Decontamination mechanism is located at the middle part of the pump line conveying mechanism,
The pump line conveying mechanism includes holder, the carrying roller unit of n arranged in rows and for driving the carrying roller unit rotational
Power plant,
The carrying roller unit includes frustum carrying roller, the roller for driving the frustum carrying roller rotation for transporting pump line for support
Axis, the first driving wheel for driving the roll shaft rotation and second for driving the roll shaft of adjacent carrying roller unit to rotate pass
Driving wheel,
The main shaft of the roll shaft and the angle of the direction of travel of the pump line are acute angle,
The power plant is connect with the first driving wheel of first carrying roller unit, the first driving wheel of (n-1)th carrying roller unit
It is connect with the second driving wheel of n-th of carrying roller unit,
The frustum carrying roller, first driving wheel and second driving wheel are fixedly connected with the roll shaft, the roll shaft
It is connect with the holder pivots.
2. pump line outer wall decontamination apparatus as described in claim 1, it is characterised in that：Further include feed mechanism and material receiving mechanism,
The feed mechanism and material receiving mechanism are respectively perpendicular the both ends for being located at the pump line conveying mechanism.
3. pump line outer wall decontamination apparatus as claimed in claim 2, it is characterised in that：The height of the material receiving mechanism is less than described
The height of frustum carrying roller, the material receiving mechanism are equipped with the guide groove of the direction of travel for changing the pump line, the guiding
Slot includes the arc panel being vertically arranged and fixed pressing plate vertical with the inside plate face of the arc panel, and the pressing plate is by pump line
It is highly continuously decreased on conveying mechanism to the direction of material receiving mechanism.
4. pump line outer wall decontamination apparatus as described in claim 1, it is characterised in that：The sandblasting decontamination mechanism include shell,
It is respectively provided at the inlet port and outlet port of shell both sides and is located at sand jet outlet of the enclosure interior for spraying steel sand.
5. pump line outer wall decontamination apparatus as claimed in claim 4, it is characterised in that：The feed inlet of the sandblasting decontamination mechanism and
Discharge port is equipped with the flexible baffle ring for preventing steel sand from escaping, and the flexibility baffle ring outer rim is fixed on the feed inlet and described
On discharge port, inner edge is equipped with the gear tooth to the sandblasting decontamination mechanism inner inclination.
6. pump line outer wall decontamination apparatus as claimed in claim 4, it is characterised in that：The frustum carrying roller stretches out the holder,
The sandblasting decontamination mechanism is located at the side of the pump line conveying mechanism, and several frustum carrying rollers are located at the sandblasting spotter
Inside structure.
7. pump line outer wall decontamination apparatus as described in claim 1, it is characterised in that：The power plant is driven with described first
Between wheel, between first driving wheel and second driving wheel be belt transmission, chain drive or gear drive.
8. pump line outer wall decontamination apparatus as described in claim 1, it is characterised in that：The main shaft of the roll shaft and the pump line
The angle of direction of travel be 30 °~60 °.
9. pump line outer wall decontamination apparatus as claimed in claim 2, it is characterised in that：The feed mechanism and the material receiving mechanism
It is carrying roller delivery platform.
10. pump line outer wall decontamination apparatus as described in claim 1, it is characterised in that：The roll shaft passes through two bearings and institute
Holder connection is stated, first driving wheel and second driving wheel are between described two bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721918495.1U CN207953587U (en) | 2017-12-30 | 2017-12-30 | Pump line outer wall decontamination apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721918495.1U CN207953587U (en) | 2017-12-30 | 2017-12-30 | Pump line outer wall decontamination apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207953587U true CN207953587U (en) | 2018-10-12 |
Family
ID=63731441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721918495.1U Expired - Fee Related CN207953587U (en) | 2017-12-30 | 2017-12-30 | Pump line outer wall decontamination apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207953587U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113859854A (en) * | 2021-10-25 | 2021-12-31 | 新兴河北工程技术有限公司 | Bell and spigot pipeline axial conveyer and pipeline surface treatment system |
-
2017
- 2017-12-30 CN CN201721918495.1U patent/CN207953587U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113859854A (en) * | 2021-10-25 | 2021-12-31 | 新兴河北工程技术有限公司 | Bell and spigot pipeline axial conveyer and pipeline surface treatment system |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181012 Termination date: 20201230 |
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| CF01 | Termination of patent right due to non-payment of annual fee |