CN113440928A - Muddy water treatment equipment for drainage engineering pipe jacking construction - Google Patents
Muddy water treatment equipment for drainage engineering pipe jacking construction Download PDFInfo
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- CN113440928A CN113440928A CN202110825556.4A CN202110825556A CN113440928A CN 113440928 A CN113440928 A CN 113440928A CN 202110825556 A CN202110825556 A CN 202110825556A CN 113440928 A CN113440928 A CN 113440928A
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- pipe
- water treatment
- primary
- muddy water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 238000010276 construction Methods 0.000 title claims abstract description 16
- 238000001914 filtration Methods 0.000 claims abstract description 93
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 239000010865 sewage Substances 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 238000007599 discharging Methods 0.000 claims description 4
- 239000010802 sludge Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009439 industrial construction Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
- B01D36/045—Combination of filters with centrifugal separation devices
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Sludge (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a muddy water treatment device for drainage engineering pipe jacking construction, and relates to the technical field of engineering sewage treatment. The filter comprises a cylinder, a liquid inlet part and a filter assembly, wherein the filter assembly is arranged in the cylinder in a matching way; the filter assembly comprises a primary filter part and a secondary filter part, the primary filter part is fixedly arranged at the port of the secondary filter part, and the port of the primary filter part is fixedly provided with a liquid inlet part extending out of the cylinder; the bottom of the cylinder body is provided with a motor which is in transmission connection with the secondary filtering part. The invention completes the filtration through the primary filtration part and the secondary filtration part and discharges the sludge through the port of the secondary filtration part, thereby facilitating the completion of the filtration treatment of the sludge and water.
Description
Technical Field
The invention belongs to the technical field of engineering sewage treatment, and particularly relates to a muddy water treatment device for drainage engineering pipe jacking construction.
Background
In industrial construction and production, a large amount of sludge water is often generated, and if the sludge water is directly discharged, not only environmental pollution but also waste of water resources can be caused. The existing muddy water treatment equipment is used for directly filtering muddy water, the workload of a filtering device is large, most of muddy water treatment equipment only separates water from sludge, then the sludge is discarded, the sludge is not treated, and the subsequent recycling of the sludge is inconvenient.
Disclosure of Invention
The invention aims to provide muddy water treatment equipment for drainage engineering pipe jacking construction, which completes filtration through a primary filtering part and a secondary filtering part and discharges the muddy water through a port of the secondary filtering part, is convenient for completing filtration treatment of muddy water and solves the related problems in the background technology.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a muddy water treatment device for drainage engineering pipe jacking construction, which comprises a cylinder body, a liquid inlet part and a filtering assembly, wherein the filtering assembly is arranged in the cylinder body in a matching way; the filter assembly comprises a primary filter part and a secondary filter part, the primary filter part is fixedly arranged at the port of the secondary filter part, and the port of the primary filter part is fixedly provided with a liquid inlet part extending out of the cylinder; and the bottom of the cylinder body is provided with a motor in transmission connection with the secondary filtering part.
Further, the liquid inlet part, the primary filtering part and the secondary filtering part are all regular cylinder structures, and the axis of the liquid inlet part, the axis of the primary filtering part, the axis of the secondary filtering part and the axis of the cylinder are the same.
Furthermore, the top of barrel is equipped with the opening, the mud discharging mouth with outside intercommunication is seted up to the bottom of barrel, the bottom surface of barrel runs through there is the slotted hole, the equipartition has a plurality of supporting legs on the bottom surface of barrel.
Furthermore, the liquid inlet part comprises a pipe sleeve, a first spiral blade and an outer ring body, the pipe sleeve is coaxially distributed in the outer ring body, and the outer side face of the pipe sleeve is connected with the inner side face of the outer ring body through the first spiral blades in the same rotation direction.
Furthermore, the top end of the pipe sleeve is provided with an annular chamfer structure, the top end of the outer ring body is a horn-shaped opening, and the bottom end of the outer ring body extends outwards to form a rim body.
Further, the primary filtering part comprises a conical shell and a conical filtering net, a plurality of spiral blades II which are same in rotating direction are evenly distributed on the inner side face of the conical shell, a drain outlet communicated with the outside is formed in the opening of the large end of the conical shell, a limiting ring is extended on the inner side of the small end of the conical shell, and the conical filtering net with the end part extending into the inner part of the conical shell is installed on the limiting ring in a matched mode.
Furthermore, the primary filtering part also comprises a fixed block, the fixed block is fixedly arranged at the end part of the conical filtering net, the fixed block is arranged in the pipe sleeve in a matching way, meanwhile, the large end of the conical shell is fixedly arranged with the edge of the outer ring body, and the large end of the conical shell is lapped on the opening of the cylinder body; the rotating direction of the second spiral blade is opposite to that of the first spiral blade.
Further, the secondary filter part comprises a pipe body, a gear and a third helical blade, the top end of the pipe body is installed in a matching mode with the small end of the conical shell, the middle of the pipe body is a filter section, the outer side of the filter section is provided with the third helical blade with a plurality of same rotating directions, the bottom end of the installed pipe body penetrates through a slotted hole in the bottom surface of the cylinder body and extends to the outside, the gear is sleeved with the gear, and the gear is in transmission connection with the motor.
Furthermore, the outer side surface of the primary filtering part, the outer side surface of the secondary filtering part and the inner side surface of the barrel form a cavity, and the through hole sewage draining port of the cavity is communicated with the inside of the primary filtering part.
The invention has the following beneficial effects:
1. according to the invention, the port of the muddy water discharge pipe is connected with the port of the liquid inlet part or is arranged on the upper side of the port of the liquid inlet part, so that muddy water can conveniently enter the filter assembly to complete the filtration treatment of the muddy water, the muddy water to be filtered is filtered by the primary filter part and the secondary filter part and is discharged through the port of the secondary filter part, and the filtration treatment of the muddy water can be conveniently completed.
2. When the installed motor drives the filtering component and the liquid inlet part to rotate forwards, the rotating direction of the spiral blade I is opposite to the rotating direction of the liquid inlet part, so that muddy water is conveniently pushed into the filtering component through the liquid inlet part, the pressure in the filtering component is increased, and the filtering effect is improved.
3. In the process of rotating the primary filtering part, water contained in the muddy water is filtered through the conical filtering net, and silt contained in the muddy water moves outwards under the action of centrifugal force.
4. The silt which is discharged through the sewage discharge outlet and has a small amount of moisture enters the cavity formed by the outer side surface of the primary filtering part, the outer side surface of the secondary filtering part and the inner side surface of the barrel, the filtering section of the rotating secondary filtering part is provided with the third spiral blade with the rotating direction opposite to the rotating direction, and in the rotating process of the secondary filtering part, the silt containing a small amount of moisture enters the gaps formed by the third spiral blades to extrude the moisture to enter the inside of the pipe body through the filtering section and be discharged, and the silt is discharged through the mud discharge outlet, so that the moisture in the silt is improved and the silt is convenient to collect.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the overall assembly structure of the present invention;
FIG. 2 is a schematic view of the overall assembly structure of the present invention;
FIG. 3 is a schematic view of the filter assembly of the present invention in conjunction with a liquid inlet;
FIG. 4 is a schematic cross-sectional view of the entire structure of FIG. 3 in accordance with the present invention;
FIG. 5 is a schematic view of a primary filter portion according to the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1-cylinder body, 11-sludge discharge port, 12-supporting leg, 2-liquid inlet part, 21-sleeve, 22-helical blade I, 23-outer ring body, 3-primary filtering part, 31-conical shell, 311-limiting ring, 312-helical blade II, 313-sewage outlet, 32-conical filtering net, 33-fixing block, 4-secondary filtering part, 41-pipe body, 411-filtering section, 42-gear, 43-helical blade III and 5-motor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.
Referring to fig. 1-5, the invention relates to a sludge water treatment device for pipe jacking construction in drainage engineering, which comprises a cylinder body 1, a liquid inlet part 2 and a filtering assembly, wherein the filtering assembly is arranged in the cylinder body 1 in a matching way; the filtering component comprises a primary filtering part 3 and a secondary filtering part 4, the primary filtering part 3 is fixedly arranged at the port of the secondary filtering part 4, and the port of the primary filtering part 3 is fixedly provided with a liquid inlet part 2 extending out of the cylinder 1; the bottom of the cylinder body 1 is provided with a motor 5 which is in transmission connection with the secondary filtering part 4.
In the in-process that uses, be connected the port of muddy water discharge pipe and the port of feed liquor portion 2 or place the port upside at feed liquor portion 2, inside the muddy water of being convenient for gets into filter assembly, the completion is to the filtration treatment of muddy water, treat that filterable muddy water accomplishes the filtration through a filter house 3 and secondary filter house 4 and discharge through the port of secondary filter house 4, be convenient for accomplish the filtration treatment to muddy water, the motor 5 of installation drives filter assembly and rotates, realize that silt moves to the outside, avoid silt to block up inside filter screen.
The liquid inlet part 2, the primary filtering part 3 and the secondary filtering part 4 are all regular cylinder structures, and the axis of the liquid inlet part 2, the axis of the primary filtering part 3, the axis of the secondary filtering part 4 and the axis of the cylinder 1 are the same.
The top of barrel 1 is equipped with the opening, and the mud discharging port 11 with outside intercommunication is seted up to the bottom of barrel 1, and the bottom surface of barrel 1 runs through there is the slotted hole, and the equipartition has a plurality of supporting legs 12 on the bottom surface of barrel 1. The liquid inlet part 2 comprises a pipe sleeve 21, a first helical blade 22 and an outer ring body 23, the pipe sleeve 21 is coaxially distributed in the outer ring body 23, and the outer side surface of the pipe sleeve 21 is connected with the inner side surface of the outer ring body 23 through the first helical blades 22 in the same rotation direction. The top end of the pipe sleeve 21 is provided with an annular chamfer structure, the top end of the outer ring body 23 is a trumpet-shaped opening, and the bottom end of the outer ring body 23 extends outwards to form a rim body.
When the installed motor drives the filtering component and the liquid inlet part 2 to rotate forwards, the rotating direction of the spiral blade I22 is opposite to the rotating direction of the liquid inlet part 2, so that muddy water can be conveniently pushed into the filtering component through the liquid inlet part 2, the pressure in the filtering component is increased, and the filtering effect is improved; in addition, the port of the liquid inlet part 2 is hermetically connected with a muddy water discharge pipe, so that the muddy water in the top pipe of the drainage project can be conveniently pumped.
The primary filtering part 3 comprises a conical shell 31 and a conical filtering net 32, a plurality of spiral blades 312 with the same rotating direction are uniformly distributed on the inner side surface of the conical shell 31, a large-end opening of the conical shell 31 is communicated with the outside through a sewage outlet 313, a limiting ring 311 extends from the inner side of the small end of the conical shell 31, and the limiting ring 311 is provided with the conical filtering net 32 with the end part extending into the conical shell 31 in a matching manner.
The primary filtering part 3 also comprises a fixed block 33, the fixed block 33 is fixedly arranged at the end part of the conical filtering net 32, the fixed block 33 is arranged in the pipe sleeve 21 in a matching way, meanwhile, the large end of the conical shell 31 is fixedly arranged with the edge of the outer ring body 23, and the large end of the conical shell 31 is lapped on the opening of the cylinder body 1; the direction of rotation of the second helical blade 312 is opposite to the direction of rotation of the first helical blade 22.
At the 3 pivoted in-process of filter house, the water that contains in the muddy water passes through toper filter screen 32 and accomplishes the filtration, the silt that contains in the muddy water moves to the outside under the effect of centrifugal force simultaneously, because two 312 spiral blade that conical shell 31 was equipped with revolve to the same with the filter house 3 rotation direction, sediment in the bottom, the silt of outside motion and a small amount of water discharge through the drain 313 that is equipped with along two 312 upward movements of spiral blade, the inside silt content of filter house 3 is once effectively reduced, increase and filter for a long time.
The secondary filter part 4 comprises a pipe body 41, a gear 42 and three helical blades 43, the top end of the pipe body 41 is installed in cooperation with the small end of the conical shell 31, the middle of the pipe body 41 is a filter section 411, the outer side of the filter section 411 is provided with the three helical blades 43 with the same rotating directions, the bottom end of the installed pipe body 41 penetrates through a slotted hole in the bottom surface of the cylinder body 1 and extends to the outside, the gear 42 is sleeved on the bottom end of the installed pipe body, and the gear 42 is in transmission connection with the motor 5.
The outer side surface of the primary filtering part 3, the outer side surface of the secondary filtering part 4 and the inner side surface of the barrel 1 form a cavity, and the cavity through hole sewage draining port 313 is communicated with the inside of the primary filtering part 3.
The lateral surface that has a small amount of moisture through drain 313 exhaust still and the lateral surface of secondary filter portion 4 and the medial surface of barrel 1 constitute in the cavity, pivoted secondary filter portion 4's fillter 411 is equipped with soon to three 43 with the helical blade that the direction of rotation is opposite, secondary filter portion 4 rotates the in-process, the silt that contains a small amount of moisture gets into in the clearance that three 43 of a plurality of helical blade formed, it gets into body 41 inside and discharges through fillter 411 to accomplish extrusion moisture, silt is discharged through mud discharging outlet 11, the improvement is to the recovery of moisture in the silt, be convenient for collect silt.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (9)
1. The utility model provides a drainage engineering push pipe is muddy water treatment facilities for construction, includes barrel (1), feed liquor portion (2) and filtering component, its characterized in that:
a filtering component is arranged in the cylinder body (1) in a matching way;
the filter assembly comprises a primary filter part (3) and a secondary filter part (4), the primary filter part (3) is fixedly arranged at a port of the secondary filter part (4), and a liquid inlet part (2) extending out of the cylinder body (1) is fixedly arranged at the port of the primary filter part (3);
and a motor (5) in transmission connection with the secondary filtering part (4) is installed at the bottom of the cylinder body (1).
2. The muddy water treatment device for the drainage engineering pipe jacking construction is characterized in that the liquid inlet part (2), the primary filtering part (3) and the secondary filtering part (4) are all regular cylinder structures, and the axis of the liquid inlet part (2), the axis of the primary filtering part (3), the axis of the secondary filtering part (4) and the axis of the cylinder body (1) are the same.
3. The mud water treatment equipment for the pipe jacking construction of the drainage engineering according to claim 1, wherein an opening is formed in the top end of the cylinder body (1), a mud discharging port (11) communicated with the outside is formed in the bottom end of the cylinder body (1), a slotted hole penetrates through the bottom surface of the cylinder body (1), and a plurality of supporting legs (12) are uniformly distributed on the bottom surface of the cylinder body (1).
4. The muddy water treatment device for the drainage engineering pipe jacking construction as claimed in claim 1 or 2, wherein the liquid inlet part (2) comprises a pipe sleeve (21), a first helical blade (22) and an outer ring body (23), the pipe sleeve (21) is coaxially arranged in the outer ring body (23), and the outer side surface of the pipe sleeve (21) is connected with the inner side surface of the outer ring body (23) through the first helical blades (22) in the same rotation direction.
5. The mud water treatment equipment for jacking pipe construction in drainage engineering as claimed in claim 4, wherein the top end of the pipe sleeve (21) is provided with an annular chamfer structure, the top end of the outer ring body (23) is provided with a trumpet-shaped opening, and the bottom end of the outer ring body (23) extends outwards to form a rim.
6. The mud water treatment equipment for the drainage engineering pipe jacking construction is characterized in that the primary filtering part (3) comprises a conical shell (31) and a conical filtering net (32), a plurality of spiral blades (312) with the same rotating direction are evenly distributed on the inner side surface of the conical shell (31), a large-end opening of the conical shell (31) is communicated with an external sewage outlet (313), a limiting ring (311) extends from the inner side of a small end of the conical shell (31), and the conical filtering net (32) with the end extending into the conical shell (31) is installed on the limiting ring (311) in a matched mode.
7. The mud water treatment equipment for the pipe jacking construction of the drainage engineering according to claim 6, wherein the primary filtering part (3) further comprises a fixing block (33), the fixing block (33) is fixedly arranged at the end part of the conical filtering net (32), the fixing block (33) is arranged in the pipe sleeve (21) in a matching way, meanwhile, the large end of the conical shell (31) is fixedly arranged with the edge of the outer ring body (23), and the large end of the conical shell (31) is lapped on the opening of the barrel body (1);
the rotating direction of the second spiral blade (312) is opposite to that of the first spiral blade (22).
8. The muddy water treatment device for the drainage engineering pipe jacking construction is characterized in that the secondary filtering part (4) comprises a pipe body (41), a gear (42) and a third helical blade (43), the top end of the pipe body (41) is matched and installed with the small end of the conical shell (31), the middle part of the pipe body (41) is a filtering section (411), the outer side of the filtering section (411) is provided with the third helical blade (43) with the same rotating direction, the bottom end of the installed pipe body (41) penetrates through a slotted hole in the bottom surface of the barrel body (1) to extend to the outside and is sleeved with the gear (42), and the gear (42) is in transmission connection with the motor (5).
9. The muddy water treatment device for the drainage engineering pipe jacking construction is characterized in that a cavity is formed by the outer side surface of the primary filtering part (3), the outer side surface of the secondary filtering part (4) and the inner side surface of the barrel body (1), and a sewage draining outlet (313) of a through hole of the cavity is communicated with the inside of the primary filtering part (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110825556.4A CN113440928B (en) | 2021-07-21 | 2021-07-21 | Muddy water treatment equipment for drainage engineering pipe jacking construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110825556.4A CN113440928B (en) | 2021-07-21 | 2021-07-21 | Muddy water treatment equipment for drainage engineering pipe jacking construction |
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| CN113440928A true CN113440928A (en) | 2021-09-28 |
| CN113440928B CN113440928B (en) | 2022-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110825556.4A Active CN113440928B (en) | 2021-07-21 | 2021-07-21 | Muddy water treatment equipment for drainage engineering pipe jacking construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114319510A (en) * | 2021-12-29 | 2022-04-12 | 湖南富金成建筑工程管理有限公司 | House building drainage structures |
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|---|---|---|---|---|
| GB1234495A (en) * | 1968-08-26 | 1971-06-03 | ||
| GB2049460A (en) * | 1979-03-15 | 1980-12-31 | Uop Inc | Secondary sludge dewatering process |
| DE3715019A1 (en) * | 1987-05-06 | 1988-11-17 | Geiger Maschf Helmut | Apparatus for separating solids from liquids |
| EP2644575A1 (en) * | 2012-03-26 | 2013-10-02 | R.E.M. S.R.L. | A dewatering device for sludge |
| CN211273793U (en) * | 2019-11-20 | 2020-08-18 | 深圳市新涛环境科技有限公司 | Debris separator in mud |
| CN211339138U (en) * | 2019-09-29 | 2020-08-25 | 赖圣利 | Small-size domestic sewage treatment plant |
| CN112774299A (en) * | 2021-01-04 | 2021-05-11 | 安徽志光环保设备科技有限公司 | Continuous activated carbon tower for sewage treatment |
| CN113134259A (en) * | 2021-04-27 | 2021-07-20 | 焦华丽 | Sludge recovery device |
-
2021
- 2021-07-21 CN CN202110825556.4A patent/CN113440928B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1234495A (en) * | 1968-08-26 | 1971-06-03 | ||
| GB2049460A (en) * | 1979-03-15 | 1980-12-31 | Uop Inc | Secondary sludge dewatering process |
| DE3715019A1 (en) * | 1987-05-06 | 1988-11-17 | Geiger Maschf Helmut | Apparatus for separating solids from liquids |
| EP2644575A1 (en) * | 2012-03-26 | 2013-10-02 | R.E.M. S.R.L. | A dewatering device for sludge |
| CN211339138U (en) * | 2019-09-29 | 2020-08-25 | 赖圣利 | Small-size domestic sewage treatment plant |
| CN211273793U (en) * | 2019-11-20 | 2020-08-18 | 深圳市新涛环境科技有限公司 | Debris separator in mud |
| CN112774299A (en) * | 2021-01-04 | 2021-05-11 | 安徽志光环保设备科技有限公司 | Continuous activated carbon tower for sewage treatment |
| CN113134259A (en) * | 2021-04-27 | 2021-07-20 | 焦华丽 | Sludge recovery device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114319510A (en) * | 2021-12-29 | 2022-04-12 | 湖南富金成建筑工程管理有限公司 | House building drainage structures |
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| CN113440928B (en) | 2022-08-16 |
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Denomination of invention: A Mud and Water Treatment Equipment for Top Pipe Construction in Drainage Engineering Granted publication date: 20220816 Pledgee: Dongguan Wanjiang Sub-branch of Agricultural Bank of China Co.,Ltd. Pledgor: Guangdong xinguangyuan Construction Engineering Co.,Ltd. Registration number: Y2024980022032 |
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