CN205613124U - High pressure sludge -water separation device - Google Patents
High pressure sludge -water separation device Download PDFInfo
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- CN205613124U CN205613124U CN201620348012.8U CN201620348012U CN205613124U CN 205613124 U CN205613124 U CN 205613124U CN 201620348012 U CN201620348012 U CN 201620348012U CN 205613124 U CN205613124 U CN 205613124U
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- mud
- water separation
- plunger
- water
- high pressure
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Abstract
The utility model provides a high pressure sludge -water separation device for carry out mud -water separation to the useless thick liquid of engineering, including power device and mud -water separation unit, the mud -water separation unit includes both ends open -ended mud -water separation room, pours into the useless thick liquid of engineering into mud -water separation room advance to starch unit, plunger, starch unit, both ends open -ended uide bushing, filter screen and sealing device with the play of the sediment mud discharge mud -water separation room behind the mud -water separation, the one end and the uide bushing of mud -water separation room are connected, the other end and the unit connection of play thick liquid, the plunger passes the uide bushing and gets into the mud -water separation room, and the plunger is provided with sealing washer at least between with the uide bushing inner wall, advances to starch inside the unit is located the plunger, and power device is connected with the plunger and drives plunger edge uide bushing reciprocating motion. The utility model provides an among the prior art the useless thick liquid mud -water separation in -process of engineering have high energy consumption, inefficient problem.
Description
Technical field
The utility model belongs to technical field of building construction, relates to a kind of high pressure device for separating mud and water.
Background technology
In engineering construction, cast-in-situ bored pile is big with its bearing capacity, to advantages such as surrounding environment are little by extensively
General use.During boring, the dregs that boring produces can constantly enter to, in mud, finally lead to
Cross circulating pump to drain into the settling tank on ground forms the useless slurry of engineering.Engineering gives up the volume starched with boring directly
Footpath, drilling depth and processing mode are relevant, are generally into 3-6 times of pore volume, substantial amounts of discarded
If the not treated just discharge of mud, serious environmental pollution can be caused, it is therefore necessary to discarded mud
Slurry is processed.
At present in engineering useless slurry process field, in order to improve treatment effeciency and the impact on environment for the minimizing,
Abandoned project mud is processed by the method being commonly used mechanical filter.The general principle filtering is such as
Shown in Fig. 1, when the useless slurry of engineering is by filter medium, under the pressure differential effect of filter medium both sides,
The catching, solid particles of major diameter is at the surface of filter medium formation slag mud, and low-density thin mud
(solid particle comprising water and minor diameter) can pass through the inner passage of filter medium, thus
Reach the purpose of mud-water separation.
Vacuum filtration, pressure filtration, centrifugal filtration and squeeze and filter etc. are currently mainly used in engineering
Method realizes mud-water separation.But for engineering for useless slurry, the engineering through sedimentation basin preliminary treatment is given up
Slurry is in mud state, and water content is high, has typically been above more than 300%, and solid particle is suspension
State, is difficult to directly carry out it squeeze and filter process；The method using centrifugal filtration carries out muddy water and divides
From cost is high, does not meets the requirement of green construction；Vacuum treated method limits due to atmospheric pressure,
It is difficult to produce in filter medium both sides higher pressure reduction, for example, pressure cannot be made to reach the high pressure of 30MPa
Power, when therefore causing mud-water separation, the separation of solid and liquid time is long, and efficiency is on the low side；And standard machinery pressurization by
Directly pressurizeing useless slurry in the method using piston, the not only cooperation to piston and inwall requires
Height, and Long-Time Service easily causes encapsulant abrasion, and pressure cannot continue to raise, and can make equally
Filter efficiency is slower, it is difficult to apply at the construction field (site).
Utility model content
The purpose of this utility model is to provide a kind of high pressure device for separating mud and water, it is intended to solve existing skill
In art there is high energy consumption, inefficient problem in engineering during giving up and starching mud-water separation.
For solving above-mentioned technical problem, the technical scheme that the utility model provides is as follows:
The utility model provides a kind of high pressure device for separating mud and water, carries out muddy water for the slurry that gives up engineering
Separating, including power set and mud-water separation unit, described mud-water separation unit includes both ends open
Mud-water separation room, slurry that described engineering is given up inject described mud-water separation room enter to starch unit, plunger, general
Slag mud after mud-water separation discharge the pulp unit of described mud-water separation room, both ends open fairlead,
Screen pack；
One end of described mud-water separation room is connected with described fairlead, and the other end is with described pulp unit even
Connect；
Described plunger passes through described fairlead and enters described mud-water separation room, described plunger and described guiding
Being provided with at least one sealing ring between set inwall, described power set are connected with described plunger and drive
Described plunger moves back and forth along the bearing of trend of described fairlead, enables described plunger to described muddy water
It is in the useless slurry pressurization of closed state in separation chamber；
The inwall of described mud-water separation room is provided with the multiple through holes being in communication with the outside, and described screen pack is solid
On the inwall of described mud-water separation room；
Gap is left between the inwall of described plunger and described mud-water separation room and screen pack.
Further, described plunger is hollow circle tube, and its one end open, the other end are closed, described
The blind end of plunger passes through described fairlead and enters described mud-water separation room, described plunger and described muddy water
Gap between the inwall of separation chamber and screen pack is 2-3mm.
Further, described fairlead is provided with dust-proof on the inwall of one end, described mud-water separation room
Circle, described dust ring is in close contact with described outer plunger surface, and described sealing ring is positioned at described dust ring
Side away from described mud-water separation room.
Further, be provided with outside the blind end of described plunger and scrape mud brush, described scrape mud brush with described
Screen pack contact is arranged, and brushes the sand grains being attached on described screen pack, described muddy water
High pressure muddy water in separation chamber scrapes mud brush described in can passing freely through.
Further, described fairlead and one end, described mud-water separation room are bolted.
Further, described enter to starch unit and include pulp-inlet pipe road and be arranged at entering on described pulp-inlet pipe road
Slurry electrical ball valve.
Further, the blind end of described plunger is provided with the stock inlet connecting with described mud-water separation room,
Described stock inlet connects with described pulp-inlet pipe road.
Further, described pulp unit includes pulp pipeline and is arranged at going out on described pulp pipeline
Slurry electrical ball valve.
Further, described mud-water separation room is cylinder, and the diameter of described pulp pipeline is less than described
The diameter of mud-water separation room, described pulp pipeline is connected with described mud-water separation room by conical sleeve,
The big opening end of described conical sleeve connects described mud-water separation room, and osculum end connects described pulp pipeline.
Further, described conical sleeve and described mud-water separation room are bolted.
Further, described conical sleeve is provided with the described mud-water separation chamber interior mud pressure of measurement
Pressure sensor.
Further, described power set include hydraulic jack and connector, and described plunger body is provided with
Connecting base, the piston rod of described hydraulic jack is connected with the described base that is connected by connector.
Further, described hydraulic jack is double acting hydraulic cylinder.
Further, described device for separating mud and water includes two mud-water separation unit, described power set
For dual-rod hydraulic cylinder, two piston rods of described dual-rod hydraulic cylinder respectively with said two mud-water separation list
The described plunger of unit connects.
Compared with prior art, advantage of the present utility model is:
Useless slurry is pressurizeed by the mode using plunger, on the one hand easily realizes high pressure, mud in useless slurry
The efficiency that water separates is high；Plunger is contactless with separation chamber's inwall simultaneously, eliminates the abrasion of screen pack,
Substantially increase the service life of plunger and screen pack；Finally, due to gap is very little, plunger sets
Having put and having scraped mud brush, above-mentioned measure prevents slag mud silting on screen pack, solves engineering in prior art
There is high energy consumption, inefficient problem during useless slurry mud-water separation.
Brief description
Fig. 1 is the structural representation of a kind of high pressure device for separating mud and water that the utility model embodiment provides
Figure；
Fig. 2 is the injection process of discarded slurry in a kind of mud-water separation method in the utility model embodiment
Schematic diagram；
Fig. 3 is the mud-water separation of discarded slurry in a kind of mud-water separation method in the utility model embodiment
The schematic diagram of process；
Fig. 4 is to use two mud-water separation lists in a kind of mud-water separation method in the utility model embodiment
The operating diagram of unit；
Fig. 5 is to use two mud-water separation lists in a kind of mud-water separation method in the utility model embodiment
The operating diagram of unit.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments to a kind of high pressure mud-water separation dress that the utility model proposes
Put and be described in further detail.According to following explanation and claims, advantage of the present utility model and
Feature will be apparent from.It should be noted that, accompanying drawing all use the form simplifying very much and all use non-precisely
Ratio, only in order to convenient, aid in illustrating the purpose of the utility model embodiment lucidly.
The utility model provides a kind of high pressure device for separating mud and water, carries out muddy water for the slurry that gives up engineering
Separating, including power set and mud-water separation unit, described mud-water separation unit includes both ends open
What the 1st, described engineering was given up that slurry injects described mud-water separation room 1 by mud-water separation room enters to starch unit the 2nd, to institute
State the engineering in mud-water separation room 1 give up slurry pressure plunger the 3rd, by after mud-water separation slag mud discharge institute
State fairlead the 5th, screen pack 6 of pulp unit the 4th, the both ends open of mud-water separation room 1；
One end of described mud-water separation room 1 is connected with described fairlead 5, the other end and described pulp list
Unit 4 connects；
Described plunger 3 passes through described fairlead 5 and enters described mud-water separation room 1, described plunger 3 with
It is provided with at least one sealing ring 7, described power set and described post between described fairlead 5 inwall
Plug 3 connects and drives described plunger 3 along the bearing of trend reciprocating motion of described fairlead 5, makes described
Plunger 3 can be to the useless slurry pressurization being in closed state in described mud-water separation room 1；
The inwall of described mud-water separation room 1 is provided with the multiple through holes being in communication with the outside, described screen pack
On 6 inwalls being fixed on described mud-water separation room 1；
Do not contact between the inwall of described plunger 3 and described mud-water separation room 1 and screen pack 6, leave
Gap, gap width is at 2-3mm.
In the present embodiment, plunger 3 is driven to be in entering mud-water separation room 1 by power set close
In the pending useless slurry of envelope state, due to clamp-oning of plunger, force to reduce the volume of pending useless slurry,
Thus set up high pressure in pending useless slurry, it is achieved the quick separating of muddy water.In the present embodiment, post
Plug 3 has gap with the inwall of mud-water separation room 1, is in not contact condition；And piston in prior art
When to useless slurry pressurization, the contact internal walls of piston and mud-water separation room.Due to plunger 3 and mud-water separation
The inwall of room 1 is contactless, not only eliminates the abrasion between plunger 3 and the inwall of mud-water separation room 1,
Reduce requirement on machining accuracy, simultaneously because be provided with sealing ring on fairlead 5 inwall, mud can be kept
The pressure of water separation chamber 1, it is achieved the sealing function under condition of high voltage, can be real in pending mud
Existing high pressure so that mud-water separation is faster, in hgher efficiency.Meanwhile, in the present embodiment, screen pack
6 have seal approach with the coupling part of mud-water separation room 1 inwall, are possible to prevent useless slurry by filtering
Net 6 and directly flow out separation chamber by the through hole on the inwall of mud-water separation room 1.
Further, the cylindrical shape that described plunger 31 is hollow, its one end open, other end closing,
The blind end of described plunger 31 passes through described fairlead 5 and enters described mud-water separation room 1.
Further, described fairlead 5 is provided with on the inwall of one end, described mud-water separation room 1
Dust ring 8, described dust ring 8 and the close contact of described plunger 31 outer surface, described sealing ring 7
In described dust ring 8 away from the side of described mud-water separation room 1.The main purpose of dust ring 8 is set
It is, the sand grains being attached to plunger 31 surface is struck off.
Further, it is provided with outside the blind end of described plunger 31 and scrapes mud brush 32, described scrape mud brush
32 contact setting with described screen pack 6, brush the sand grains being attached on described screen pack 6
Remove, the high pressure muddy water in described mud-water separation room 1 can pass freely through described in scrape mud brush 32.Setting is scraped
The purpose of mud brush 32 is, to the sand being attached on screen pack 6 surface in the reciprocating motion of plunger 31
Soil particle brushes, and prevents sand grains from depositing on the surface of screen pack 6 and making screen pack 6
Filtering function lost efficacy, scrape the material of mud brush 32 and can select rubber, and scrape mud brush 32 without sealing
Function, the pending useless slurry within mud-water separation room 1 can pass freely through scrapes mud brush 32.
Further, described fairlead 5 and one end, described mud-water separation room 1 are bolted.This
In embodiment, fairlead 5 can be fixed on mud-water separation room 1 by flange face and attachment screw,
Fairlead 5 predominantly plunger 31 carries out motion guide, prevents plunger 31 under the promotion of power set
Journal offset is occurred to cause seal failure.
Further, described enter to starch unit 2 and include pulp-inlet pipe road 21 and be arranged on described pulp-inlet pipe road
Enter to starch electrical ball valve 22.
Further, the blind end of described plunger 31 be provided with connect with described mud-water separation room 1 enter slurry
Mouth 33, described stock inlet 33 connects with described pulp-inlet pipe road 21.
Further, described pulp unit 4 includes pulp pipeline 41 and is arranged at described pulp pipeline
Pulp electrical ball valve 42 on 41.
Further, described mud-water separation room 1 is cylinder, and the diameter of described pulp pipeline 41 is less than
The diameter of described mud-water separation room 1, described pulp pipeline 41 is divided with described muddy water by conical sleeve 9
Connecting from room 1, the big opening end of described conical sleeve 8 connects described mud-water separation room 1, and osculum end is even
Connect described pulp pipeline 41.
Further, described conical sleeve 9 and described mud-water separation room 1 are bolted.
Further, described conical sleeve 9 is provided with the described mud-water separation chamber interior mud pressure of measurement
The pressure sensor 91 of power.
Further, described power set include hydraulic jack and connector, and described plunger 31 is internal to be set
Having connection base 34, the piston rod connector of described hydraulic jack connects with the described base 34 that is connected.
Further, described hydraulic jack is double acting hydraulic cylinder.
Further, described device for separating mud and water includes two mud-water separation unit, described power set
For dual-rod hydraulic cylinder, two piston rods of described dual-rod hydraulic cylinder respectively with said two mud-water separation list
The described plunger of unit connects.
A kind of utilize above-mentioned high pressure device for separating mud and water engineering is given up slurry carry out mud-water separation method,
Comprise the steps:
Step one: as in figure 2 it is shown, described power set drive described plunger 3 to away from described muddy water
The direction of separation chamber 1 is moved, and closes described pulp electrical ball valve 42, open described in enter to starch electrical ball valve
22, pending engineering is given up, and to be injected into described mud-water separation room 1 internal for slurry；
Step 2: as it is shown on figure 3, when being full of the useless slurry of described engineering in described mud-water separation room 1,
Entering to starch electrical ball valve 22 described in closedown, now mud-water separation room 1 is in closed state, and described power fills
The direction putting the described plunger 3 of drive towards described mud-water separation room 1 is moved, and it is right that described plunger 3 starts
Engineering useless slurry extruding so that it is produce high pressure, proceeds by mud-water separation, the water in pending useless slurry and
Minor diameter sand grains is discharged outside mud-water separation room 1 by screen pack 6 under high pressure effect, and not
Can be trapped in mud-water separation room 1 by the major diameter sand grains of screen pack 6, gradually form slag mud；
Step 3: when the slag mud pressure after mud-water separation is more than setting value, open described pulp electronic
Ball valve 42, described slag mud is discharged.
Further, described power set include hydraulic jack and connector, and described plunger body is provided with
Connecting base 34, described hydraulic cylinder piston rod is connected with the described base 34 that is connected by connector.
In step 3, after slag mud discharges mud-water separation room 1, power set drive plunger to away from described mud
The direction motion of water separation chamber 1, simultaneously plunger 31 front end scrape mud brush 32 to being attached to screen pack 6
On slag mud strike off, prevent screen pack 6 from silting occurring.When the piston rod of hydraulic jack contracts completely
Hui Shi, device for separating mud and water starts a new round and enters slurry, compression and plasma discharge circulation.
In use, described device for separating mud and water both can be used alone, it is also possible to use in pairs.Enter
One step, described device for separating mud and water includes two mud-water separation unit, and described power set are double-rod
Hydraulic cylinder, two piston rods of described dual-rod hydraulic cylinder institute with said two mud-water separation unit respectively
State plunger to connect.
As illustrated in figures 4-5, further, when one end piston rod of described dual-rod hydraulic cylinder stretches out, band
One of them plunger of dynamic said two mud-water separation unit stretches out, and another plunger then can be retracted；,
Stretch out the duty that corresponding mud-water separation unit is in described step one with described plunger；With described
Retract corresponding mud-water separation unit of plunger is in described step 2 to the duty of step 3.Two ends
Mud-water separation unit produce water collected by the water collector of bottom and recycle.By above-mentioned
Scheme, in each stroke action of hydraulic jack, all has a mud-water separation unit carrying out muddy water
Detached job, substantially increases the operating efficiency of device for separating mud and water.
The utility model uses the mode of plunger to pressurize useless slurry, on the one hand easily real in useless slurry
Existing high pressure, the efficiency of mud-water separation is high；Plunger is contactless with separation chamber's inwall simultaneously, eliminates filtration
The abrasion of net, substantially increases the service life of plunger and screen pack；Finally, due to gap is very little,
Being provided with on plunger and scraping mud brush, above-mentioned measure prevents slag mud silting on screen pack, solves existing
In technology there is high energy consumption, inefficient problem in engineering during giving up and starching mud-water separation.
Foregoing description is only the description to the utility model preferred embodiment, not to the utility model model
Any restriction enclosed, the those of ordinary skill in the utility model field is according to appointing that the disclosure above content is done
What change, modification, belong to the protection domain of claims.
Claims (14)
1. a high pressure device for separating mud and water, carries out mud-water separation for the slurry that gives up engineering, and its feature exists
In including power set and mud-water separation unit, described mud-water separation unit includes the mud of both ends open
Water separation chamber, slurry that described engineering is given up inject described mud-water separation room enter to starch unit, plunger, by mud
Slag mud after water separates discharges the pulp unit of described mud-water separation room, the fairlead of both ends open, mistake
Filter screen；
One end of described mud-water separation room is connected with described fairlead, and the other end is with described pulp unit even
Connect；
Described plunger passes through described fairlead and enters described mud-water separation room, described plunger and described guiding
Being provided with at least one sealing ring between set inwall, described power set are connected with described plunger and drive
Described plunger moves back and forth along the bearing of trend of described fairlead, enables described plunger to described muddy water
It is in the useless slurry pressurization of closed state in separation chamber；
The inwall of described mud-water separation room is provided with the multiple through holes being in communication with the outside, and described screen pack is solid
On the inwall of described mud-water separation room；
Gap is left between the inwall of described plunger and described mud-water separation room and screen pack.
2. high pressure device for separating mud and water according to claim 1, it is characterised in that described plunger
For hollow circle tube, its one end open, other end closing, the blind end of described plunger passes through described leading
To covering into described mud-water separation room, the inwall of described plunger and described mud-water separation room and screen pack it
Between gap be 2-3mm.
3. high pressure device for separating mud and water according to claim 1, it is characterised in that described guiding
Set is provided with dust ring, described dust ring and described post on the inwall of one end, described mud-water separation room
Outer surface is in close contact, and described sealing ring is positioned at described dust ring away from the one of described mud-water separation room
Side.
4. high pressure device for separating mud and water according to claim 2, it is characterised in that described plunger
Blind end outside be provided with and scrape mud brush, described mud brush of scraping contacts setting with described screen pack, to attachment
Sand grains on described screen pack brushes, and the indoor high pressure muddy water of described mud-water separation is permissible
Mud brush is scraped described in passing freely through.
5. high pressure device for separating mud and water according to claim 1, it is characterised in that described guiding
Set is bolted with one end, described mud-water separation room.
6. high pressure device for separating mud and water according to claim 2, it is characterised in that described enter slurry
Unit include pulp-inlet pipe road and be arranged on described pulp-inlet pipe road enter to starch electrical ball valve.
7. high pressure device for separating mud and water according to claim 6, it is characterised in that described plunger
Blind end be provided with the stock inlet connecting with described mud-water separation room, described stock inlet and described pulp-inlet pipe
Road connects.
8. high pressure device for separating mud and water according to claim 1, it is characterised in that described pulp
Unit includes pulp pipeline and the pulp electrical ball valve being arranged on described pulp pipeline.
9. high pressure device for separating mud and water according to claim 8, it is characterised in that described muddy water
Separation chamber is cylinder, and the diameter of described pulp pipeline is less than the diameter of described mud-water separation room, described
Pulp pipeline is connected with described mud-water separation room by conical sleeve, and the big opening end of described conical sleeve is even
Connecing described mud-water separation room, osculum end connects described pulp pipeline.
10. high pressure device for separating mud and water according to claim 9, it is characterised in that described cone
Shape sleeve is bolted with described mud-water separation room.
11. high pressure device for separating mud and water according to claim 9, it is characterised in that described cone
It is provided with the pressure sensor measuring described mud-water separation chamber interior mud pressure on shape sleeve.
12. high pressure device for separating mud and water according to claim 2, it is characterised in that described dynamic
Power apparatus includes hydraulic jack and connector, and described plunger body is provided with connection base, described hydraulic oil
The piston rod of cylinder is connected with the described base that is connected by connector.
13. high pressure device for separating mud and water according to claim 12, it is characterised in that described liquid
Compressing cylinder is double acting hydraulic cylinder.
The 14. high pressure device for separating mud and water according to any one of claim 1-13, it is characterised in that
Described device for separating mud and water includes two mud-water separation unit, and described power set are dual-rod hydraulic cylinder,
Two piston rods of described dual-rod hydraulic cylinder connect with the described plunger of said two mud-water separation unit respectively
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620348012.8U CN205613124U (en) | 2016-04-22 | 2016-04-22 | High pressure sludge -water separation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620348012.8U CN205613124U (en) | 2016-04-22 | 2016-04-22 | High pressure sludge -water separation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205613124U true CN205613124U (en) | 2016-10-05 |
Family
ID=57027972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620348012.8U Withdrawn - After Issue CN205613124U (en) | 2016-04-22 | 2016-04-22 | High pressure sludge -water separation device |
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| CN (1) | CN205613124U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105688487A (en) * | 2016-04-22 | 2016-06-22 | 上海市机械施工集团有限公司 | High-pressure sludge-water separation device and method |
| CN108298656A (en) * | 2018-03-03 | 2018-07-20 | 宁波帝杨电子科技有限公司 | A kind of environmental protection and energy saving sewage disposal device |
| CN108383221A (en) * | 2018-03-03 | 2018-08-10 | 宁波帝杨电子科技有限公司 | A kind of energy conservation and environmental protection sewage disposal device |
| CN108383222A (en) * | 2018-03-03 | 2018-08-10 | 宁波帝杨电子科技有限公司 | A kind of environmental protection and energy saving sewage-treatment plant |
| CN108545907A (en) * | 2018-05-04 | 2018-09-18 | 于佳 | A kind of municipal sludge collection pre-processing device |
| WO2022095882A1 (en) * | 2020-11-06 | 2022-05-12 | 中国港湾工程有限责任公司 | Slurry treatment device for pile foundation construction |
-
2016
- 2016-04-22 CN CN201620348012.8U patent/CN205613124U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105688487A (en) * | 2016-04-22 | 2016-06-22 | 上海市机械施工集团有限公司 | High-pressure sludge-water separation device and method |
| CN108298656A (en) * | 2018-03-03 | 2018-07-20 | 宁波帝杨电子科技有限公司 | A kind of environmental protection and energy saving sewage disposal device |
| CN108383221A (en) * | 2018-03-03 | 2018-08-10 | 宁波帝杨电子科技有限公司 | A kind of energy conservation and environmental protection sewage disposal device |
| CN108383222A (en) * | 2018-03-03 | 2018-08-10 | 宁波帝杨电子科技有限公司 | A kind of environmental protection and energy saving sewage-treatment plant |
| CN108545907A (en) * | 2018-05-04 | 2018-09-18 | 于佳 | A kind of municipal sludge collection pre-processing device |
| WO2022095882A1 (en) * | 2020-11-06 | 2022-05-12 | 中国港湾工程有限责任公司 | Slurry treatment device for pile foundation construction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161005 Effective date of abandoning: 20171124 |