CN112049231A - Dredging method for preventing blockage of sewage discharge pipe - Google Patents
Dredging method for preventing blockage of sewage discharge pipe Download PDFInfo
- Publication number
- CN112049231A CN112049231A CN202010879571.2A CN202010879571A CN112049231A CN 112049231 A CN112049231 A CN 112049231A CN 202010879571 A CN202010879571 A CN 202010879571A CN 112049231 A CN112049231 A CN 112049231A
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- Prior art keywords
- cleaning
- crushing
- blocked
- pipe
- connecting block
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000010865 sewage Substances 0.000 title claims description 16
- 239000007788 liquid Substances 0.000 claims abstract description 35
- 238000004140 cleaning Methods 0.000 claims abstract description 30
- 239000012459 cleaning agent Substances 0.000 claims abstract description 9
- 239000011550 stock solution Substances 0.000 claims description 16
- 238000005507 spraying Methods 0.000 claims description 12
- 239000003814 drug Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 244000309464 bull Species 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 2
- 230000002265 prevention Effects 0.000 claims description 2
- 239000007858 starting material Substances 0.000 claims description 2
- 238000005253 cladding Methods 0.000 claims 1
- 238000000354 decomposition reaction Methods 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 11
- 230000009471 action Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005549 size reduction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F9/00—Arrangements or fixed installations methods or devices for cleaning or clearing sewer pipes, e.g. by flushing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/0084—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating garbage, waste or sewage
- B02C18/0092—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating garbage, waste or sewage for waste water or for garbage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F9/00—Arrangements or fixed installations methods or devices for cleaning or clearing sewer pipes, e.g. by flushing
- E03F9/002—Cleaning sewer pipes by mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C2201/00—Codes relating to disintegrating devices adapted for specific materials
- B02C2201/06—Codes relating to disintegrating devices adapted for specific materials for garbage, waste or sewage
- B02C2201/063—Codes relating to disintegrating devices adapted for specific materials for garbage, waste or sewage for waste water or sewage
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
The invention discloses a dredging device for preventing a drain pipe from being blocked, which comprises a pipe body, wherein cleaning openings are formed in the surface of one side of the pipe body at equal intervals, a liquid storage and flow guide assembly is arranged on the inner side of each cleaning opening, an adjusting groove is formed in the bottom end of the liquid storage and flow guide assembly, a rotating rod is fixedly installed on the inner side of the adjusting groove, a connecting block is rotatably installed on the outer side of the rotating rod, and a crushing assembly is arranged at the bottom end of the connecting block. In the process of dredging the pipeline, the blocked position can be observed and positioned in real time through the observation window, then the cleaning port at the corresponding blocked position is opened, the holding rod extends to the pipeline blocked position at the inner side of the cleaning port, and the cleaning agent is sprayed to realize quick cleaning, so that the traditional method that the cleaning process is carried out from the initial end to the tail end of the pipeline is replaced, the cleaning target is clearer, the cleaning process is simpler, the cleaning workload is greatly reduced, and the overall cleaning efficiency is improved.
Description
Technical Field
The invention relates to the technical field of pipeline dredging, in particular to a dredging method for preventing a drain pipe from being blocked.
Background
The sewage pipes are an essential part in the construction of high-rise buildings, the function of the sewage pipes is to discharge waste water, excrement and the like in the high-rise buildings outdoors, the phenomenon that the sewage pipes are blocked in daily life occurs at the same time, a great deal of inconvenience is brought to the daily life of people, and when a plurality of parts are seriously blocked in the sewage pipes, workers need to dredge the sewage pipes through dredging equipment.
At present, the initial end of the sewage pipeline starts to reach the terminal end when the pipeline is dredged, the workload of the pipeline dredging is greatly increased, the overall efficiency of the pipeline dredging is reduced, manual operation is mainly carried out through manpower in the existing dredging process, and the dredging process is very troublesome, time-consuming and labor-consuming.
Disclosure of Invention
The invention aims to provide a dredging method for preventing a sewage discharge pipe from being blocked, which aims to solve the problems that the prior art provided by the background art has the disadvantages that the workload of dredging the pipeline is greatly increased and the overall efficiency of dredging the pipeline is reduced because the pipeline is dredged from the initial end to the tail end of the sewage discharge pipeline, and the prior art mainly adopts manual operation to dredge the pipeline, so that the dredging is very troublesome, time-consuming and labor-consuming.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a pull throughs of prevention blow off pipe jam, includes the body, the clearance mouth has been seted up to a side surface equidistance of body, the inboard of clearance mouth is provided with stock solution water conservancy diversion subassembly, the adjustment tank has been seted up to stock solution water conservancy diversion subassembly's bottom, the inboard fixed mounting of adjustment tank has the bull stick, the outside of bull stick is rotated and is installed the connecting block, the bottom of connecting block is provided with crushing unit.
Preferably, stock solution water conservancy diversion subassembly includes movable mounting and holds the pole at clearance mouthful inboard, the top of holding the pole is provided with annotates the liquid mouth, the inboard integrated into one piece that holds the pole is provided with the stock solution chamber, the outside in stock solution chamber is provided with the honeycomb duct, and all fixes installation control valve on the honeycomb duct.
Preferably, the crushing assembly comprises a motor fixedly installed at the bottom of the connecting block, a crushing shaft is fixedly installed at the output end of the motor, a crushing blade is installed around the outer side of the crushing shaft in a surrounding mode, and a waterproof membrane is arranged on the outer side of the motor in a wrapping mode.
Preferably, the outer side of the holding rod is fixedly provided with a liquid spraying nozzle, the surface of the liquid spraying nozzle is provided with a through hole, and the liquid spraying nozzle is connected with the flow guide pipe.
Preferably, the top of clearance mouth all has movable mounting to have a sealing end cover, and the embedding of one side surface of body installs the observation window.
A dredging method for preventing a sewage discharge pipe from being blocked comprises the following steps:
s1, at first the position that the inside of pipeline blockked up is directly perceived to the accessible observation window, opens the end cover of relevant position department through the manual work, and it is inboard to hold the holding rod through the manual work and extend crushing unit to clearance mouth, until extending to the corresponding position department that needs the clearance of body, and inject certain clearance medicament into liquid storage chamber inside through annotating the liquid mouth, connect outside air compression equipment through annotating liquid mouth and hose simultaneously.
S2, then through the inside injection pressure of air compression equipment to the stock solution chamber, and open the control valve on the honeycomb duct of corresponding one side, through pressure with the inside clearance medicament of stock solution chamber derive to the honeycomb duct inside, derive through the honeycomb duct and carry inside the hydrojet, through the through-hole on the hydrojet with the clearance medicament spray the jam of jam position department on clear up in real time, carry out chemical reaction through clearance medicament and jam, the realization is decomposed the jam in real time.
S3, when meetting comparatively hard material of being difficult to clear up, perhaps can't carry out the material that decomposes through the clearance medicament, can be according to the position of plug and the different needs of direction, rotate in real time on the bull stick of adjustment tank inboard through artifical promotion connecting block, the realization is adjusted in real time to crushing unit ' S direction, make crushing unit can carry out real-time corresponding contact with the plug, drive crushing shaft and crushing blade through starter motor and rotate in real time, the realization is smashed the clearance to hard and the plug that can't decompose.
Compared with the prior art, the invention has the beneficial effects that:
in the process of dredging the pipeline, the blocked position can be observed and positioned in real time through the observation window, then the cleaning port at the corresponding blocked position is opened, the holding rod extends to the pipeline blocked position at the inner side of the cleaning port, and the cleaning agent is sprayed to realize quick cleaning, so that the traditional method that the cleaning process is carried out from the initial end to the tail end of the pipeline is replaced, the cleaning target is clearer, the cleaning process is simpler, the cleaning workload is greatly reduced, and the overall cleaning efficiency is improved.
In the process of dredging the pipeline, when hard substances are difficult to clean or substances which cannot be decomposed by cleaning agents are encountered, the direction of the crushing assembly can be adjusted in real time by manually pushing the connecting block to rotate on the rotating rod on the inner side of the adjusting groove in real time according to the requirements of different positions and directions of the blockages, so that the crushing assembly can be in real-time corresponding contact with the blockages, the crushing shaft and the crushing blade are driven to rotate in real time by the starting motor, the hard and undecomposed blockages are crushed and cleaned, and the whole cleaning is less in limitation, and the blockage is cleaned more cleanly and thoroughly.
Drawings
FIG. 1 is a schematic view of the internal structure of the pipe of the present invention;
FIG. 2 is a schematic view of the internal structure of the holding rod of the present invention;
FIG. 3 is a schematic view of the cleaning part of the present invention;
fig. 4 is a front view of the present invention.
In the figure: 1. a liquid injection port; 2. cleaning the opening; 3. a pipe body; 4. a holding rod; 5. a size reduction assembly; 6. a crushing shaft; 7. a crushing blade; 8. a liquid storage cavity; 9. a liquid storage and flow guide assembly; 10. a control valve; 11. a flow guide pipe; 12. a motor; 13. connecting blocks; 14. a rotating rod; 15. an adjustment groove; 16. a liquid spray nozzle; 17. an observation window; 18. and sealing the end cover.
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.
Referring to fig. 1-4, the present invention provides a technical solution: a dredging device for preventing a drain pipe from being blocked comprises a pipe body 3, cleaning ports 2 are equidistantly formed in one side surface of the pipe body 3, a liquid storage and flow guide assembly 9 is arranged on the inner side of each cleaning port 2, an adjusting groove 15 is formed in the bottom end of each liquid storage and flow guide assembly 9, a rotating rod 14 is fixedly installed on the inner side of each adjusting groove 15, a connecting block 13 is rotatably installed on the outer side of each rotating rod 14, the connecting block 13 can be manually pushed to rotate on the rotating rod 14 on the inner side of the adjusting groove 15 in real time according to the requirements of different positions and directions of blockages, so that the direction of a crushing assembly 5 can be adjusted in real time, the crushing assembly 5 can be in real-time corresponding contact with the blockages, a crushing assembly 5 is arranged at the bottom end of each connecting block 13, each liquid storage and flow guide assembly 9 comprises a holding rod 4 movably installed on the inner side of each cleaning port 2, a liquid injection port 1, the outside of stock solution chamber 8 is provided with honeycomb duct 11, and all fixed installation control valve 10 on the honeycomb duct 11, through annotating liquid mouth 1 to the inside certain clearance medicament of injecting into of stock solution chamber 8, simultaneously through annotating liquid mouth 1 and hose connection outside air compression equipment, through the inside injection pressure of air compression equipment to stock solution chamber 8, and open the control valve 10 on the honeycomb duct 11 of corresponding one side, export the inside clearance medicament of stock solution chamber 8 to honeycomb duct 11 inside through pressure, export through honeycomb duct 11 and carry inside spouting liquid mouth 16, spray the jam of jam position department with the clearance medicament through the through-hole on the spouting liquid mouth 16 on and carry out real-time clearance, carry out chemical reaction through clearance medicament and jam, the realization is decomposed in real time to the jam.
The crushing component 5 comprises a motor 12 fixedly installed at the bottom of a connecting block 13, a crushing shaft 6 is fixedly installed at the output end of the motor 12, a crushing blade 7 is fixedly installed at the outer side of the crushing shaft 6 in a surrounding mode, the crushing shaft 6 and the crushing blade 7 are driven to rotate in real time by starting the motor 12, hard and irresolvable blocking objects are crushed and cleaned, a waterproof film is coated on the outer side of the motor 12 and can protect the motor 12 to prevent short circuit caused by moisture permeating into the motor 12, a liquid spraying nozzle 16 is fixedly installed on the outer side of a holding rod 4, a through hole is formed in the surface of the liquid spraying nozzle 16, the liquid spraying nozzle 16 is connected with a flow guide pipe 11, sealing end covers 18 are movably installed at the top end of a cleaning port 2, an observation window 17 is embedded in the surface of one side of a pipe body 3, the position of blocking inside the pipe can be found visually through the observation window 17, and the sealing end covers, the crushing assembly 5 is extended to the inner side of the cleaning port 2 by manually holding the holding rod 4 until the crushing assembly is extended to the position of the pipe body 3 which is correspondingly required to be cleaned.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a pull throughs of prevention blow off pipe jam, includes body (3), its characterized in that: cleaning opening (2) have been seted up to a side surface equidistance of body (3), the inboard of cleaning opening (2) is provided with stock solution water conservancy diversion subassembly (9), adjustment tank (15) have been seted up to the bottom of stock solution water conservancy diversion subassembly (9), the inboard fixed mounting of adjustment tank (15) has bull stick (14), connecting block (13) are installed in the outside rotation of bull stick (14), the bottom of connecting block (13) is provided with crushing unit (5).
2. The dredge device of claim 1 for preventing the sewage pipe from being blocked, which is characterized in that: stock solution water conservancy diversion subassembly (9) are including movable mounting in the inboard holding rod (4) of clearance mouth (2), the top of holding rod (4) is provided with annotates liquid mouth (1), the inboard integrated into one piece of holding rod (4) is provided with stock solution chamber (8), the outside in stock solution chamber (8) is provided with honeycomb duct (11), and all fixes installation control valve (10) on honeycomb duct (11).
3. The dredge device of claim 1 for preventing the sewage pipe from being blocked, which is characterized in that: crushing unit (5) are including motor (12) of fixed mounting in connecting block (13) bottom, the output fixed mounting of motor (12) has crushing roller (6), the outside of crushing roller (6) is encircleed fixed mounting and is had crushing blade (7), and the outside cladding of motor (12) is provided with the water proof membrane.
4. The dredge device for preventing the sewage pipe from being blocked according to claim 2, wherein: the outer side of the holding rod (4) is fixedly provided with a liquid spraying nozzle (16), the surface of the liquid spraying nozzle (16) is provided with a through hole, and the liquid spraying nozzle (16) is connected with the flow guide pipe (11).
5. The dredge device of claim 1 for preventing the sewage pipe from being blocked, which is characterized in that: the top of clearance mouth (2) all movable mounting have end cover (18), and one side surface embedding of body (3) installs observation window (17).
6. A dredging method for preventing a sewage discharge pipe from being blocked is characterized by comprising the following steps: the method comprises the following steps:
s1, firstly, the position of the pipeline inner blockage can be found visually through the observation window (17), the sealing end cover (18) at the corresponding position is opened manually, the crushing assembly (5) is extended to the inner side of the cleaning port (2) through manually holding the holding rod (4) until the crushing assembly is extended to the position of the pipe body (3) corresponding to the position needing cleaning, certain cleaning agent is injected into the liquid storage cavity (8) through the liquid injection port (1), and meanwhile, the liquid injection port (1) and the hose are connected with external air compression equipment;
s2, injecting pressure into the liquid storage cavity (8) through air compression equipment, opening a control valve (10) on a guide pipe (11) on one corresponding side, guiding out cleaning agents in the liquid storage cavity (8) to the inside of the guide pipe (11) through the pressure, guiding out the cleaning agents through the guide pipe (11) and conveying the cleaning agents to the inside of a liquid spraying nozzle (16), spraying the cleaning agents to the blockage at the blockage position through a through hole in the liquid spraying nozzle (16) to clean in real time, and carrying out chemical reaction on the cleaning agents and the blockage to realize real-time decomposition of the blockage;
s3, when meetting comparatively hard material of difficult clearance, perhaps can't carry out the material that decomposes through the clearance medicament, can be according to the position of plug and the different needs of direction, rotate in real time on bull stick (14) of adjustment tank (15) inboard through artifical promotion connecting block (13), the realization is adjusted in real time the direction of crushing unit (5), make crushing unit (5) can carry out real-time corresponding contact with the plug, drive crushing shaft (6) and crushing blade (7) through starter motor (12) and rotate in real time, the realization smashes the clearance to hard and the plug that can't decompose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010879571.2A CN112049231A (en) | 2020-08-27 | 2020-08-27 | Dredging method for preventing blockage of sewage discharge pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010879571.2A CN112049231A (en) | 2020-08-27 | 2020-08-27 | Dredging method for preventing blockage of sewage discharge pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112049231A true CN112049231A (en) | 2020-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010879571.2A Pending CN112049231A (en) | 2020-08-27 | 2020-08-27 | Dredging method for preventing blockage of sewage discharge pipe |
Country Status (1)
| Country | Link |
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| CN (1) | CN112049231A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113774998A (en) * | 2021-10-08 | 2021-12-10 | 江苏力达自动化设备有限公司 | Adjustable box type non-negative pressure water supply equipment |
| CN118959772A (en) * | 2024-10-21 | 2024-11-15 | 永忠工程管理(集团)有限公司 | An anti-blocking pipe for toilets in high-cold areas |
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| JP2006348635A (en) * | 2005-06-17 | 2006-12-28 | Frp Support Service Kk | In-pipe work robot |
| CN206352336U (en) * | 2017-01-05 | 2017-07-25 | 四川建筑职业技术学院 | A kind of intelligent building drainage canal block-preventing device |
| CN107605029A (en) * | 2017-09-23 | 2018-01-19 | 成都阡陌九城网络科技有限公司 | A kind of effluent treatment plant of municipal sewage pipe network |
| CN108755872A (en) * | 2018-06-01 | 2018-11-06 | 北京劲威环保科技发展有限公司 | A kind of blow-off line multistage dredging method |
| CN109261664A (en) * | 2018-08-01 | 2019-01-25 | 中际同创管廊设备制造东台有限公司 | A kind of anti-block apparatus of the pre-buried pipeline of water conservancy |
| CN209603242U (en) * | 2019-01-13 | 2019-11-08 | 许正荣 | A kind of municipal drainage pipeline cleaning equipment |
| CN110468922A (en) * | 2019-07-02 | 2019-11-19 | 湖北大学 | A kind of high-pressure dredging unit for sewage conduct |
| CN111076025A (en) * | 2019-12-06 | 2020-04-28 | 西安中威环境技术有限公司 | Conveying pipeline for sewage treatment |
-
2020
- 2020-08-27 CN CN202010879571.2A patent/CN112049231A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006348635A (en) * | 2005-06-17 | 2006-12-28 | Frp Support Service Kk | In-pipe work robot |
| CN206352336U (en) * | 2017-01-05 | 2017-07-25 | 四川建筑职业技术学院 | A kind of intelligent building drainage canal block-preventing device |
| CN107605029A (en) * | 2017-09-23 | 2018-01-19 | 成都阡陌九城网络科技有限公司 | A kind of effluent treatment plant of municipal sewage pipe network |
| CN108755872A (en) * | 2018-06-01 | 2018-11-06 | 北京劲威环保科技发展有限公司 | A kind of blow-off line multistage dredging method |
| CN109261664A (en) * | 2018-08-01 | 2019-01-25 | 中际同创管廊设备制造东台有限公司 | A kind of anti-block apparatus of the pre-buried pipeline of water conservancy |
| CN209603242U (en) * | 2019-01-13 | 2019-11-08 | 许正荣 | A kind of municipal drainage pipeline cleaning equipment |
| CN110468922A (en) * | 2019-07-02 | 2019-11-19 | 湖北大学 | A kind of high-pressure dredging unit for sewage conduct |
| CN111076025A (en) * | 2019-12-06 | 2020-04-28 | 西安中威环境技术有限公司 | Conveying pipeline for sewage treatment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113774998A (en) * | 2021-10-08 | 2021-12-10 | 江苏力达自动化设备有限公司 | Adjustable box type non-negative pressure water supply equipment |
| CN118959772A (en) * | 2024-10-21 | 2024-11-15 | 永忠工程管理(集团)有限公司 | An anti-blocking pipe for toilets in high-cold areas |
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Application publication date: 20201208 |
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