CN205875381U - A rotating sealer for spiral advance and retreat formula pipeline dredging device - Google Patents
A rotating sealer for spiral advance and retreat formula pipeline dredging device Download PDFInfo
- Publication number
- CN205875381U CN205875381U CN201620820951.8U CN201620820951U CN205875381U CN 205875381 U CN205875381 U CN 205875381U CN 201620820951 U CN201620820951 U CN 201620820951U CN 205875381 U CN205875381 U CN 205875381U
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- ring
- sleeve
- wall
- ring baffle
- water inlet
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Abstract
A rotating sealer for spiral advance and retreat formula pipeline dredging device includes the preceding sleeve and back sleeve that set up with the axial, and the protheca barrel casing is established at spiral advance and retreat formula pipeline dredging device's main connecting pipe outsidely, preceding sleeve rear portion and the anterior threaded connection of back sleeve, and preceding sleeve front end is equipped with preceding ring baffle, and the middle part of preceding sleeve inner wall is equipped with well ring baffle, and the preceding tip of back sleeve inner wall is equipped with posterior annulus shape baffle, and the tip is equipped with the clamp ring behind the inner wall of posterior annulus shape baffle. The utility model relates to a novel, simple structure and compact, sealed effectual, easily the operation fully reduces operating personnel intensity of labour, degree of automation is high, but automatical advancing with retreat to used repeatedly many times, dredge effectual, the mediation operation of the municipal pipeline of specially adapted for.
Description
Technical field
This utility model belongs to municipal works management and maintenance technical field, particularly relates to a kind of for spiral advance and retreat formula pipeline
The rotating seal of dredger.
Background technology
In annual summer, all there is heavy showers weather in domestic a lot of places, and urban waterlogging problem emerges in an endless stream, and directly endangers
To safe operation and the life security of the people in city, also result in huge economic loss simultaneously.And cause urban waterlogging
Reason has a lot, and as excessive in rainfall, Poor construction quality of terrace-bank, drainage pipeline are damaged.The dynamics of urban construction is more come in addition
The biggest, the sandy soil needed for engineering the most easily drop and are deposited on road, and rinse inflow sewage, rain-water drainage with road surface
System, causes the amount of sludge increase in pipeline to cause pipeline obstruction, also results in rainy day impeded drainage simultaneously, be further exacerbated by city
City's waterlogging, affects traffic unobstructed, even results in traffic paralysis.The most conscientiously improve the drainage efficiency of urban discharging pipeline, reduce
Pipeline alluvial or blocking, it is ensured that pipeline is unimpeded, ensure safety in flood season, is the most effective approach solving urban waterlogging.
At present, the dredging of urban rainwater, sewage pipe is generally used the dredging vehicle of municipal works, but on-the-spot big portion
Be allocated as industry and need for manual operation, this not only work under bad environment, labor intensity big, inefficiency, and expend a large amount of
Water resource, dredging effect the most bad.
Utility model content
This utility model is in order to solve weak point of the prior art, it is provided that a kind of automaticity is high, sealing effectiveness
Rotating seal for spiral advance and retreat formula pipe dredging device good, that be easily installed and dismantle.
For solving above-mentioned technical problem, this utility model adopts the following technical scheme that for spiral advance and retreat formula pipe-dredging
The rotating seal of device, including front sleeve and the rear sleeve of coaxial setting, front sleeve is set in spiral advance and retreat formula pipeline and dredges
Outside the main connecting tube of exchange device, front sleeve rear portion is connected with rear sleeve front threads, and front sleeve front end is provided with front ring baffle,
The middle part of front sleeve inwall is provided with middle ring baffle, and the leading section of rear sleeve lining is provided with rear ring baffle, rear ring baffle
Rear inner wall portion is provided with hold-down ring；
Main connecting tube outer wall rearward end is provided with annular concave platform rank, and main connecting tube external rear wall is provided with anterior with middle ring baffle
Corresponding location ring flat-plate, outside front ring baffle trailing flank, middle ring baffle leading flank, location ring flat-plate leading flank and main connecting tube
It is encircled into bearing chamber between wall, deep groove ball bearing is installed in bearing chamber, the inner ring of deep groove ball bearing and main connecting tube outer wall mistake
It is full of cooperation, the outer ring of deep groove ball bearing and front sleeve inwall interference fit；
Middle ring baffle rear inside wall, location ring flat-plate trailing flank, between rear ring baffle leading flank and main connecting tube outer wall
It is provided with front sealing ring, at annular concave platform rank, is provided with the rear sealing ring between hold-down ring leading flank and rear ring baffle inwall,
In the main water inlet tube front end of spiral advance and retreat formula pipe dredging device extend into rear sleeve and threaded with rear sleeve, main water inlet tube
Main water inlet sealing ring it is provided with between outer wall and rear sleeve rear inside wall.
Front ring baffle is provided with the oil filler point connected with bearing chamber, and before the connection of oil filler point female thread protrudes from, annular is kept off
The sealing stud of plate front surface.
Using technique scheme, spiral advance and retreat formula pipe dredging device also includes techniques below feature: include dredging drill
Head, the anterior external form of Dredge drill bit is conical structure, and the rear portion external form of Dredge drill bit is cylindrical structural, Dredge drill bit rear portion
Cylindrical structural external peripheral surface be provided with spiral helicine fin bar, Dredge drill bit is hollow structure and rear end opening；
The coaxial connection in Dredge drill bit rear end has main connecting tube, and main connecting tube rear end is by rotatory sealing of the present utility model
Device connects main water inlet tube, and the water inlet of main water inlet tube is provided with main adpting flange, and main water inlet tube is provided with main control valve, main connection
In pipe and main water inlet tube, coaxial line is provided with auxiliary water inlet pipe, and auxiliary water inlet pipe front end extend in Dredge drill bit, assists water inlet pipe
Outer wall is connected with main water inlet tube inwall by fixed mount, and auxiliary water inlet pipe front end is provided with spacing ring, and auxiliary water inlet pipe is arranged with
Can be along the back-up ring of auxiliary water inlet pipe slide anteroposterior, back-up ring outer ring is fixed with pressure bearing, the outer ring of pressure bearing and dredging drill
Head contact internal walls；Auxiliary water inlet pipe rear end connects has auxiliary water-feeding tube, auxiliary water-feeding tube to be perpendicular to assist water inlet pipe, auxiliary water supply
Pipe also and is provided with auxiliary water inlet sealing ring through main water inlet tube main water inlet tube, auxiliary water-feeding tube is provided with aux. control valve,
The water inlet of auxiliary water-feeding tube is provided with auxiliary adpting flange；
Dredge drill bit rear portion the most uniformly offers at least three advance hole for water spraying, and Dredge drill bit front portion is circumferentially
Direction uniformly offers at least three and retreats hole for water spraying, and the aperture of advance hole for water spraying and retrogressing hole for water spraying is respectively less than outside pressure bearing
The width of circle, the inner port of advance hole for water spraying is positioned at the front side of the external port of advance hole for water spraying, and the centrage of advance hole for water spraying is inclined
Centrage from Dredge drill bit；The inner port retreating hole for water spraying is positioned at the rear side of the external port retreating hole for water spraying, retreats hole for water spraying
The centrage of centrage deviation Dredge drill bit, the centrage of advance hole for water spraying and retreat the centrage of hole for water spraying all and dredging drill
The centrage of head is the angle of 40-50 °；
Dredge drill bit includes that drill body and adapter sleeve, adapter sleeve front end are plugged in drill body rear portion and by front screw
Fixing connection；The internal diameter of adapter sleeve front portion is equal with the internal diameter at drill body rear portion, and the internal diameter at adapter sleeve rear portion is less than adapter sleeve
Anterior internal diameter；Main connecting tube front portion is plugged in adapter sleeve rear portion and connects by rear screw is fixing；
Advance hole for water spraying and spiral helicine fin bar are each provided on drill body, before retrogressing hole for water spraying is located at adapter sleeve
Portion.
The hydraulic balance hole that back-up ring is penetrating before and after being provided with
The work process of spiral advance and retreat formula pipe dredging device is as follows: the main adpting flange on main water inlet tube and auxiliary water supply
Auxiliary adpting flange on pipe, is all connected with high-pressure water (high-pressure water can use the dredging vehicle that municipal works are commonly used), incite somebody to action this
Utility model is placed at the blocking of drainage pipeline, opens main control valve, water under high pressure by main water inlet tube enter into main connecting tube and
In Dredge drill bit, water under high pressure drives back-up ring and pressure bearing to move forward, spacing ring circle procephalic to back-up ring and dredging drill
Pyramidal structure limits the position moved forward to pressure bearing, and now the outer ring of pressure bearing is retreating hole for water spraying closure, meanwhile,
Water under high pressure sprays in advance hole for water spraying backward, due to advance hole for water spraying centrage deviate Dredge drill bit centrage, i.e. by
In advance hole for water spraying arranged off-centre, under the jet-action of water under high pressure, the momentum that injection produces makes Dredge drill bit rotate, and axially produces
Raw active force forward, owing to Dredge drill bit is provided with spiral helicine fin bar, fin bar rotates dredging also with Dredge drill bit
Logical drill bit produces spiral thrust, at spiral thrust and water flowing common action, promotes Dredge drill bit also to travel forward while rotating,
Thus tamper in drainage pipeline is dredged, tamper is also played good dredging effect by water under high pressure.
Owing to drainage pipeline is long, it is difficult to after Dredge drill bit precession directly exit, at this moment closes main control valve, open
Aux. control valve, water under high pressure is entered into auxiliary water inlet pipe by auxiliary water-feeding tube, enters finally in Dredge drill bit, and water under high pressure drives
Back-up ring and pressure bearing are moved rearwards by, adapter sleeve rear portion limits the position that is moved rearwards by pressure bearing, now pressure bearing
Outer ring blocks advance hole for water spraying, and meanwhile, water under high pressure sprays in retreating hole for water spraying backward, owing to retreating the centrage of hole for water spraying
The centrage of deviation Dredge drill bit, i.e. owing to retreating hole for water spraying arranged off-centre, under the jet-action of water under high pressure, injection produces
Momentum makes Dredge drill bit rotate, and axially produces active force backward, owing to Dredge drill bit is provided with spiral helicine fin bar, fin
Bar rotates also with Dredge drill bit and Dredge drill bit is produced spiral thrust, at spiral thrust and water flowing common action, promotes dredging
Also rearward movement while bit, thus makes Dredge drill bit exit drainage pipeline.
Due to the setting of rotating seal, Dredge drill bit drives main connecting tube to rotate when rotating, main water inlet tube, front sleeve
All maintaining static with rear sleeve, advance along with Dredge drill bit or retreat, the deep groove ball bearing in rotating seal plays main connection
The good effect rotated of pipe, front sealing ring, rear sealing ring and main water inlet sealing ring play the effect avoiding leaking.Auxiliary water inlet pipe
It is connected with main water inlet tube by fixed mount, the pressure bearing arranged outside the back-up ring and back-up ring arranged that auxiliary water inlet pipe slides,
So can ensure the axiality assisting water inlet pipe with main water inlet tube.
The hydraulic balance hole arranged on back-up ring, water under high pressure can make both sides before and after back-up ring and pressure bearing by hydraulic balance hole
Pressure keep balance, it is to avoid hydraulic pressure is excessive to be produced huge axial force to back-up ring and pressure bearing and makes pressure bearing depart from gear
Circle.
Dredge drill bit is made up of drill body and adapter sleeve, is so not only convenient for manufacturing, and is easily installed, it is easy to
Assembly connection between adapter sleeve and main connecting tube.
Advance hole for water spraying arranges structure (centrage eccentric setting, the inner port position of advance hole for water spraying with retrogressing hole for water spraying
In the front side of the external port of advance hole for water spraying, the inner port that retreats hole for water spraying be positioned at the rear side of external port retreating hole for water spraying, front
The centrage entering hole for water spraying and the centrage all centrages with Dredge drill bit retreating hole for water spraying are the angle of 40-50 °), so
Water under high pressure can be made to drive Dredge drill bit to rotate and fully to reduce resistance simultaneously.
In sum, spiral advance and retreat formula pipe dredging device is novel in design, simple in construction and compact, it is easy to operation, fully
Reducing labor intensity of operating staff, automaticity is high, can automatically move forward and backward, and can repeatedly use, and dredges effect
Good, it is specially adapted for the dredging operation of municipal pipeline.
Accompanying drawing explanation
Fig. 1 is the structural representation of spiral advance and retreat formula pipe dredging device；
Fig. 2 is A-A sectional view in Fig. 1；
Fig. 3 is the structural representation of rotating seal in Fig. 1.
Detailed description of the invention
As shown in Figure 1, Figure 2 and Figure 3, spiral advance and retreat formula pipe dredging device, including Dredge drill bit, the front portion of Dredge drill bit
External form is conical structure, and the rear portion external form of Dredge drill bit is cylindrical structural, the cylindrical structural cylindrical at Dredge drill bit rear portion
Perimeter surface is provided with spiral helicine fin bar 1, and Dredge drill bit is hollow structure and rear end opening.
The coaxial connection in Dredge drill bit rear end has main connecting tube 2, and main connecting tube 2 rear end is connected by rotating seal 3 to be had
Main water inlet tube 4, the water inlet of main water inlet tube 4 is provided with main adpting flange 5, and main water inlet tube 4 is provided with main control valve 6, main connecting tube 2
Being provided with auxiliary water inlet pipe 7 with coaxial line in main water inlet tube 4, auxiliary water inlet pipe 7 front end extend in Dredge drill bit, assists water inlet pipe
7 outer walls are connected with main water inlet tube 4 inwall by fixed mount 8, and auxiliary water inlet pipe 7 front end is provided with spacing ring 9, on auxiliary water inlet pipe 7
Being arranged with can be along the back-up ring 10 of auxiliary water inlet pipe 7 slide anteroposterior, and back-up ring 10 outer ring is fixed with pressure bearing 11, pressure bearing 11
Outer ring and Dredge drill bit contact internal walls；Auxiliary water inlet pipe 7 rear end connects has auxiliary water-feeding tube 12, auxiliary water-feeding tube 12 to be perpendicular to
Auxiliary water inlet pipe 7, auxiliary water-feeding tube 12 also and is provided with auxiliary water inlet sealing ring 13 through main water inlet tube 4 main water inlet tube 4, auxiliary
Helping feed pipe 12 to be provided with aux. control valve 14, the water inlet of auxiliary water-feeding tube 12 is provided with auxiliary adpting flange 15.
Dredge drill bit rear portion the most uniformly offers at least three advance hole for water spraying 16, and Dredge drill bit front portion is along circle
Circumferential direction uniformly offers at least three and retreats hole for water spraying 17, and the aperture of advance hole for water spraying 16 and retrogressing hole for water spraying 17 is respectively less than pressure
The width of power bearing 11 outer ring, the inner port of advance hole for water spraying 16 is positioned at the front side of the external port of advance hole for water spraying 16, spray of advancing
The centrage of the centrage deviation Dredge drill bit in water hole 16；The inner port retreating hole for water spraying 17 is positioned at the outer end retreating hole for water spraying 17
The rear side of mouth, retreats the centrage of the centrage deviation Dredge drill bit of hole for water spraying 17, the centrage of advance hole for water spraying 16 and retrogressing
The centrage of hole for water spraying 17 all centrages with Dredge drill bit are the angle of 40-50 °.
Rotating seal 3 includes front sleeve 18 and the rear sleeve 19 of coaxial setting, and front sleeve 18 is set in main connecting tube 2
Outward, front sleeve 18 rear portion is connected with rear sleeve 19 front threads, and front sleeve 18 front end is provided with front ring baffle 20, in front sleeve 18
The middle part of wall is provided with middle ring baffle 21, and the leading section of rear sleeve 19 inwall is provided with rear ring baffle 22, rear ring baffle 22
Rear inner wall portion is provided with hold-down ring 23.
Main connecting tube 2 outer wall rearward end is provided with annular concave platform rank, and main connecting tube 2 external rear wall is provided with and middle ring baffle 21
Anterior corresponding location ring flat-plate 24, front ring baffle 20 trailing flank, middle ring baffle 21 leading flank, location ring flat-plate 24 leading flank
And it is encircled into bearing chamber between main connecting tube 2 outer wall, deep groove ball bearing 25, the inner ring of deep groove ball bearing 25 are installed in bearing chamber
With main connecting tube 2 outer wall interference fit, the outer ring of deep groove ball bearing 25 and front sleeve 18 inwall interference fit, front ring baffle 20
Being provided with the oil filler point 26 connected with bearing chamber, oil filler point 26 female thread connects to have and protrudes from the close of front ring baffle 20 front surface
Envelope stud 35.Can be deep groove ball bearing 25 oil addition by oil filler point 26 by backing out sealing stud 35.
Outside middle ring baffle 21 rear inside wall, location ring flat-plate 24 trailing flank, rear ring baffle 22 leading flank and main connecting tube 2
It is provided with front sealing ring 27 between wall, is provided with at annular concave platform rank between hold-down ring 23 leading flank and rear ring baffle 22 inwall
Rear sealing ring 28, in main water inlet tube 4 front end extend into rear sleeve 19 and threaded with rear sleeve 19, main water inlet tube 4 outer wall
And it is provided with main water inlet sealing ring 29 between rear sleeve 19 rear inside wall.
Dredge drill bit includes that drill body 30 and adapter sleeve 31, adapter sleeve 31 front end are plugged in drill body 30 rear portion and lead to
Before crossing, screw 32 is fixing connects；The internal diameter of adapter sleeve 31 front portion is equal with the internal diameter at drill body 30 rear portion, adapter sleeve 31 rear portion
Internal diameter less than the internal diameter of adapter sleeve 31 front portion；Main connecting tube 2 front portion is plugged in adapter sleeve 31 rear portion and passes through rear screw 33 admittedly
Fixed connection；Advance hole for water spraying 16 and spiral helicine fin bar 1 are each provided on drill body 30, retreat hole for water spraying 17 and are located at adapter sleeve
The front portion of 31.
The hydraulic balance hole 34 that back-up ring 10 is penetrating before and after being provided with.
Work process of the present utility model is as follows: auxiliary on main adpting flange 5 on main water inlet tube 4 and auxiliary water-feeding tube 12
Help adpting flange 15, be all connected with high-pressure water (high-pressure water can use the dredging vehicle that municipal works are commonly used), this practicality is new
Type is placed at the blocking of drainage pipeline, opens main control valve 6, and water under high pressure is entered into main connecting tube 2 and dredging by main water inlet tube 4
In drill bit, water under high pressure drives back-up ring 10 and pressure bearing 11 to move forward, and spacing ring 9 is procephalic to back-up ring 10 and dredging drill
Conical structure limits the position moved forward to pressure bearing 11, and now the outer ring of pressure bearing 11 is retreating hole for water spraying 17 envelope
Stifled, meanwhile, water under high pressure sprays in advance hole for water spraying 16 backward, owing to the centrage of advance hole for water spraying 16 deviates Dredge drill bit
Centrage, i.e. due to advance hole for water spraying 16 arranged off-centre, under the jet-action of water under high pressure, the momentum that injection produces makes dredging drill
Head rotates, and axially produces active force forward, and owing to Dredge drill bit is provided with spiral helicine fin bar 1, fin bar 1 is also with dredging
Logical bit produces spiral thrust to Dredge drill bit, at spiral thrust and water flowing common action, promotes Dredge drill bit to rotate
Also travelling forward simultaneously, thus dredge tamper in drainage pipeline, tamper is also played good dredging by water under high pressure
Effect.
Owing to drainage pipeline is long, it is difficult to after Dredge drill bit precession directly exit, at this moment closes main control valve 6, beat
Opening aux. control valve 14, water under high pressure is entered into auxiliary water inlet pipe 7 by auxiliary water-feeding tube 12, enters finally in Dredge drill bit, high
Setting-out drives back-up ring 10 and pressure bearing 11 to be moved rearwards by, and adapter sleeve 31 rear portion limits the position being moved rearwards by pressure bearing 11
Putting, now the outer ring of pressure bearing 11 blocks advance hole for water spraying 16, and meanwhile, water under high pressure sprays in retreating hole for water spraying 17 backward
Go out, owing to retreating the centrage of the centrage deviation Dredge drill bit of hole for water spraying 17, i.e. owing to retreating hole for water spraying 17 arranged off-centre,
Under the jet-action of water under high pressure, the momentum that injection produces makes Dredge drill bit rotate, and axially produces active force backward, due to dredging
Drill bit is provided with spiral helicine fin bar 1, and fin bar 1 rotates also with Dredge drill bit and Dredge drill bit is produced spiral thrust,
Spiral thrust and water flowing common action, also rearward movement while promoting Dredge drill bit to rotate, thus make Dredge drill bit exit
Drainage pipeline.
Due to the setting of rotating seal 3, Dredge drill bit drives main connecting tube 2 to rotate when rotating, main water inlet tube 4, front
Sleeve 18 and rear sleeve 19 all maintain static, and advance along with Dredge drill bit or retreat, the deep groove ball bearing 25 in rotating seal 3
Playing the effect that main connecting tube 2 well rotates, front sealing ring 27, rear sealing ring 28 and main water inlet sealing ring 29 play and avoid leaking
Effect.Auxiliary water inlet pipe 7 is connected with main water inlet tube 4 by fixed mount 8, the back-up ring 10 of setting that auxiliary water inlet pipe 7 slides with
And the outer pressure bearing 11 arranged of back-up ring 10, so can ensure the axiality assisting water inlet pipe 7 with main water inlet tube 4.
The hydraulic balance hole 34 arranged on back-up ring 10, water under high pressure can make back-up ring 10 and pressure bearing by hydraulic balance hole 34
Before and after 11, the pressure of both sides keeps balance, it is to avoid hydraulic pressure is excessive to be produced huge axial force to back-up ring 10 and pressure bearing 11 and make
Pressure bearing 11 departs from back-up ring 10.
Dredge drill bit is made up of drill body 30 and adapter sleeve 31, is so not only convenient for manufacturing, and is easily installed,
It is easily attached the assembly connection between set 31 and main connecting tube 2.
(centrage eccentric setting, such as the deviation distance in Fig. 2 for the structure that arranges of advance hole for water spraying 16 and retrogressing hole for water spraying 17
X, the inner port of advance hole for water spraying 16 is positioned at the front side of the external port of advance hole for water spraying 16, retreat hole for water spraying 17 inner port position
In the rear side of the external port retreating hole for water spraying 17, the centrage of the centrage of advance hole for water spraying 16 and retrogressing hole for water spraying 17 is all with thin
The centrage of logical drill bit is the angle of 40-50 °, preferably 44 °), water under high pressure so can be made to drive Dredge drill bit to rotate the most fully
Reduce resistance.
Shape of the present utility model, material, structure etc. are not made any pro forma restriction, every foundation by the present embodiment
Any simple modification, equivalent variations and the modification that above example is made by technical spirit of the present utility model, belongs to this reality
Protection domain by new technique scheme.
Claims (2)
1. for the rotating seal of spiral advance and retreat formula pipe dredging device, it is characterised in that: include the protheca of coaxial setting
Cylinder and rear sleeve, front sleeve is set in outside the main connecting tube of spiral advance and retreat formula pipe dredging device, front sleeve rear portion and rear enclosure
Cylinder front threads connects, and front sleeve front end is provided with front ring baffle, and the middle part of front sleeve inwall is provided with middle ring baffle, rear sleeve
The leading section of inwall is provided with rear ring baffle, and the rear inner wall portion of rear ring baffle is provided with hold-down ring；
Main connecting tube outer wall rearward end is provided with annular concave platform rank, and main connecting tube external rear wall is provided with anterior with middle ring baffle relative
The location ring flat-plate answered, front ring baffle trailing flank, middle ring baffle leading flank, location ring flat-plate leading flank and main connecting tube outer wall it
Between be encircled into bearing chamber, deep groove ball bearing is installed in bearing chamber, the inner ring of deep groove ball bearing is joined with main connecting tube outer wall interference
Close, the outer ring of deep groove ball bearing and front sleeve inwall interference fit；
Middle ring baffle rear inside wall, location ring flat-plate trailing flank, be provided with between rear ring baffle leading flank and main connecting tube outer wall
Front sealing ring, is provided with the rear sealing ring between hold-down ring leading flank and rear ring baffle inwall, spiral at annular concave platform rank
In the main water inlet tube front end of advance and retreat formula pipe dredging device extend into rear sleeve and threaded with rear sleeve, main water inlet tube outer wall
And it is provided with main water inlet sealing ring between rear sleeve rear inside wall.
Rotating seal for spiral advance and retreat formula pipe dredging device the most according to claim 1, it is characterised in that: front
Ring baffle is provided with the oil filler point connected with bearing chamber, and oil filler point female thread connects to have and protrudes from front ring baffle front surface
Seal stud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620820951.8U CN205875381U (en) | 2016-08-01 | 2016-08-01 | A rotating sealer for spiral advance and retreat formula pipeline dredging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620820951.8U CN205875381U (en) | 2016-08-01 | 2016-08-01 | A rotating sealer for spiral advance and retreat formula pipeline dredging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205875381U true CN205875381U (en) | 2017-01-11 |
Family
ID=57699587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620820951.8U Expired - Fee Related CN205875381U (en) | 2016-08-01 | 2016-08-01 | A rotating sealer for spiral advance and retreat formula pipeline dredging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205875381U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110216113A (en) * | 2019-07-02 | 2019-09-10 | 孙新龙 | A kind of dredge |
-
2016
- 2016-08-01 CN CN201620820951.8U patent/CN205875381U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110216113A (en) * | 2019-07-02 | 2019-09-10 | 孙新龙 | A kind of dredge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170111 Termination date: 20170801 |