CN112156522A - Prevent to block up and quality of water purification preliminary treatment pipeline that can dredge automatically - Google Patents
Prevent to block up and quality of water purification preliminary treatment pipeline that can dredge automatically Download PDFInfo
- Publication number
- CN112156522A CN112156522A CN202011134512.9A CN202011134512A CN112156522A CN 112156522 A CN112156522 A CN 112156522A CN 202011134512 A CN202011134512 A CN 202011134512A CN 112156522 A CN112156522 A CN 112156522A
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- Prior art keywords
- fixedly arranged
- block
- water pipe
- sliding
- pipe
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 238000000746 purification Methods 0.000 title claims abstract description 25
- 230000000694 effects Effects 0.000 claims description 14
- 239000010865 sewage Substances 0.000 abstract description 28
- 239000012535 impurity Substances 0.000 abstract description 7
- 238000007599 discharging Methods 0.000 description 3
- 230000003116 impacting effect Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/03—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Sewage (AREA)
Abstract
The invention relates to the technical field of sewage purification, and discloses a water quality purification pretreatment pipeline capable of preventing blockage and automatically dredging, which comprises a water pipe, wherein a filter screen is fixedly arranged inside the water pipe, a spring is fixedly arranged at the right end of the filter screen, a flow limiting block is fixedly arranged at the right end of the spring, a plate electrode is fixedly arranged at the left end of the flow limiting block, a roller is fixedly arranged at the top end of the inner wall of the water pipe, a buffer pipe is fixedly arranged at the lower end of the water pipe, a baffle is movably arranged at the top end of the buffer pipe, and a spiral rod is rotatably arranged at the right side of the bottom end of the. This prevent to block up and can automatic water purification preliminary treatment pipeline of dredging, automatic when sewage pipe is blockked up decontaminate the filter screen, prevent that impurity from collecting up and causing the water pipe to block up and influence the transportation, collect up when too much as debris and discharge debris is unified to make the fluting board, be convenient for later to the purification of sewage, and be higher to the transport efficiency of sewage.
Description
Technical Field
The invention relates to the technical field of sewage purification, in particular to a water quality purification pretreatment pipeline which can prevent blockage and can be automatically dredged.
Background
Sewage need carry out purification treatment to it before the emission, prevents sewage on the one hand and causes the pollution to the environment, and on the other hand realizes recycling sewage, when carrying out the pipe-line transportation before evolving sewage, because of the more water pipe that easily leads to of impurity that sewage contains blocks up, influences the transport of sewage and blowdown under water comparatively troublesome, and directly purifies comparatively loaded down with trivial details to the sewage that contains a large amount of impurity.
In order to solve the problems, the inventor provides a water quality purification pretreatment pipeline which can prevent blockage and can be automatically dredged, when a sewage pipeline is blocked, a filter screen is automatically decontaminated, the influence on transportation caused by blockage of a water pipe due to accumulation of impurities is prevented, when the accumulation of the impurities is excessive, the impurities are uniformly discharged by a grooving plate, the sewage can be conveniently purified later, and the sewage conveying efficiency is higher.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the water quality purification pretreatment pipeline which can prevent blockage and can be automatically dredged, has the advantages of preventing the blockage of a sewage pipe and discharging the sundries accumulated in the water pipe, and solves the problems that the sewage pipe is easy to block and the sundries accumulated in the water pipe are troublesome to clean.
(II) technical scheme
In order to achieve the purpose of preventing the sewage pipe from being blocked and discharging the accumulated sundries in the water pipe, the invention provides the following technical scheme: a water quality purification pretreatment pipeline capable of preventing blockage and being automatically dredged comprises a water pipe, wherein a filter screen is fixedly arranged inside the water pipe, a spring is fixedly arranged at the right end of the filter screen, a flow limiting block is fixedly arranged at the right end of the spring, a plate electrode is fixedly arranged at the left end of the flow limiting block, a roller is fixedly arranged at the top end of the inner wall of the water pipe, a buffer pipe is fixedly arranged at the lower end of the water pipe, a baffle is movably arranged at the top end of the buffer pipe, a spiral rod is rotatably arranged at the right side of the bottom end of the buffer pipe, a sliding cavity is arranged at one end, close to the buffer pipe, of the outer wall of the water pipe, a sliding pin is fixedly arranged inside the sliding cavity at the bottom end of the flow limiting block, a connecting rod is movably connected to the surface of the sliding pin, a shaft sleeve, the utility model discloses a filter plate, including the slide pin, the slide pin is close to the slide pin and is fixed on the slide pin, the upper and lower both ends of the looks near-end of slide pin are fixed mounting respectively has the both ends of second telescopic link, the slide pin is kept away from the top of restriction piece one end and is had the mediation piece through fixed mounting's dead lever fixed mounting, the bottom slidable mounting of sliding chamber inner wall has the slider, the slider passes through the bracing piece and rotates and install the filter disc, the left movable surface mounting of filter disc has the turning block, the right-hand member fixed mounting of filter disc has the fan piece, the bottom fixed mounting of slider has the activity ball, the surface slidable connection of activity ball has the.
Preferably, there are two electrode plates, and the other electrode plate is located the top of water pipe inner wall, and is located the left side of the electrode plate of restriction piece left end.
Preferably, the buffer tube is concave in shape.
Preferably, the right end of the baffle passes through the roller and is connected with the top end of the flow limiting block through a connecting line.
Preferably, the number of the sliding pins is four, every two sliding pins are respectively arranged in an up-down and left-right symmetrical mode, the sliding pins are movably connected through four connecting rods, and two ends of the second telescopic rod are fixedly arranged between the upper sliding pin and the lower sliding pin.
Preferably, the screw rod is electrically connected with the electrode plate.
Preferably, the groove block is positioned at the bottom end of the inner wall of the buffer pipe, one end of the groove block is rotatably connected with the buffer pipe, and the other end of the groove block is clamped with the buffer pipe.
(III) advantageous effects
Compared with the prior art, the invention provides a water quality purification pretreatment pipeline which can prevent blockage and can be automatically dredged, and the invention has the following beneficial effects:
1. the water quality purification pretreatment pipeline capable of preventing blockage and automatically dredging is characterized in that after a filter screen is blocked by sundries, the acting force of water flow impacting a flow limiting block is increased, so that a compression spring of the flow limiting block moves to the left side, the flow limiting block pulls a baffle plate through a connecting wire, the baffle plate rotates anticlockwise, a buffer cavity is opened, the flow limiting block drives a surface fixedly mounted electrode plate to move to the left side while moving, the dead area of the two electrode plates is increased during moving, so that the capacitance is increased, the current of a spiral rod electrically connected with the flow limiting block is increased, the rotating speed of the spiral rod is increased, sewage flows to the buffer cavity, the sewage discharge pressure of a water pipe is relieved, the flow limiting block moves to the left side to drive a sliding pin fixedly connected with the flow limiting block to move in the same direction, the sliding pin drives a fixed rod to move to the right side through, and dredge the filter screen, make the conveying efficiency of the sewage in the water pipe higher.
2. This prevent to block up and quality of water purification preliminary treatment pipeline that can dredge automatically, get into the inside of buffer tube through debris, debris block up the right-hand member at the filter disc, the filter disc drives the slider and removes to the left side under the drive of rivers, the slider drives slide rail anticlockwise rotation through the activity ball, and then make the activity ball of below move down, the activity ball passes through the push rod and promotes the channel block downwards, make and form the opening between channel block and the buffer tube, debris discharge buffer tube under the impact of rivers, reached the debris to the inside of water pipe and cleared up the exhaust purpose.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram illustrating the operation of the FIG. 1 arrangement of the present invention;
FIG. 3 is a schematic view of a dirt removing structure of the present invention;
FIG. 4 is an enlarged view of the structure A of FIG. 1 according to the present invention;
FIG. 5 is a schematic view of the structure at A-A of the present invention;
FIG. 6 is a schematic diagram illustrating the operation of the structure of FIG. 5 in accordance with the present invention.
In the figure: 1. a water pipe; 2. a filter screen; 3. a spring; 4. a flow limiting block; 5. an electrode plate; 6. a roller; 7. a buffer tube; 8. a baffle plate; 9. a screw rod; 10. a sliding cavity; 11. a slide pin; 12. a connecting rod; 13. a shaft sleeve; 14. a connecting rod; 15. a first telescopic rod; 16. a second telescopic rod; 17. fixing the rod; 18. dredging blocks; 19. a slider; 20. a support bar; 21. a filter tray; 22. rotating the block; 23. a fan blade; 24. a movable ball; 25. a slide rail; 26. a push rod; 27. and (4) a groove block.
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. 1-6, a water quality purification and pretreatment pipeline capable of preventing blockage and automatically dredging comprises a water pipe 1, a filter screen 2 is fixedly installed inside the water pipe 1, a spring 3 is fixedly installed at the right end of the filter screen 2, a current limiting block 4 is fixedly installed at the right end of the spring 3, an electrode plate 5 is fixedly installed at the left end of the current limiting block 4, two electrode plates 5 are provided, the other electrode plate is positioned at the top end of the inner wall of the water pipe 1 and positioned at the left side of the electrode plate 5 at the left end of the current limiting block 4, a roller 6 is fixedly installed at the top end of the inner wall of the water pipe 1, a buffer tube 7 is fixedly installed at the lower end of the water pipe 1, the buffer tube 7 is concave, a baffle 8 is movably installed at the top end of the buffer tube 7, the right end of the baffle 8 penetrates through the roller 6 to be connected with the top end of, one end of the outer wall of the water pipe 1 close to the buffer tube 7 is provided with a sliding cavity 10, the inside of the sliding cavity 10 at the bottom end of the current limiting block 4 is fixedly provided with four sliding pins 11, every two sliding pins 11 are respectively arranged in an up-down and left-right symmetrical manner, the sliding pins 11 are movably connected through four connecting rods 12, two ends of a second telescopic rod 16 are fixedly arranged between the upper sliding pin 11 and the lower sliding pin 11, the surface of each sliding pin 11 is movably connected with the connecting rod 12, the surface of the connecting rod 12 is provided with a shaft sleeve 13 in a sliding manner, the bottom of the near end of the shaft sleeve 13 is movably connected with a connecting rod 14, the near end of the connecting rod 14 is fixedly provided with a first telescopic rod 15, the upper end and the lower end of the near end of the sliding pin 11 are respectively fixedly provided with two ends of the second telescopic rod 16, the, the slider 19 rotates through bracing piece 20 and installs filter disc 21, the left movable surface mounting of filter disc 21 has turning block 22, the right-hand member fixed mounting of filter disc 21 has fan 23, the bottom fixed mounting of slider 19 has activity ball 24, the sliding surface connection of activity ball 24 has slide rail 25, the bottom fixed mounting of activity ball 24 has push rod 26, the bottom fixedly connected with channel block 27 of push rod 26, channel block 27 is located the bottom of buffer tube 7 inner wall, one end rotates with buffer tube 7 to be connected, the other end and buffer tube 7 joint.
The working principle is that sewage flows in the water pipe 1, when the filter screen 2 is blocked by excessive impurities, the acting force of water flow impacting the current limiting block 4 is increased, so that the current limiting block 4 compresses the spring 3 to move towards the left side, the baffle 8 is pulled by the current limiting block 4 through the connecting wire to rotate the baffle 8 anticlockwise, the buffer cavity 7 is opened, the current limiting block 4 drives the electrode plates 5 fixedly installed on the surface to move towards the left side while moving, the dead-against area of the two electrode plates 5 in the moving process is increased, so that the capacitance is increased, the current of the spiral rod 9 electrically connected with the spiral rod is increased, the rotating speed of the spiral rod 9 is increased, so that the sewage flows towards the buffer tube, the sewage discharge pressure of the water pipe 1 is relieved, the current limiting block 4 moves towards the left to drive the sliding pin 11 fixedly connected with the current limiting block to move in the same direction, and the sliding pin 11 on the right side moves towards the opposite direction through the shaft sleeve 13 in, so that the slide pin 11 on the right side drives the fixed rod 17 to move towards the right side, the fixed rod 17 drives the dredging block 18 to move towards the filter screen 2 and dredge the filter screen 2, so that the conveying efficiency of sewage in the water pipe 1 is higher, when a large amount of sundries enter the inside of the buffer tube 7 under the action of the screw rod 9, water flow drives the fan sheet 23 to rotate, the fan sheet 23 drives the filter disc 21 to rotate, the filter disc 21 rotates to drive the rotating block 22 to rotate, so that the filter disc 21 is opened, water flow can flow out of the buffer tube 7, when sundries are excessive, the fan sheet 23 stops rotating, the filter disc 21 stops rotating along with the fan sheet and closes a channel, the filter disc 21 drives the slide block 19 to move towards the left side under the driving of the water flow, the slide block 19 drives the slide rail 25 to rotate anticlockwise through the movable ball 24, so that the movable ball 24 below moves downwards, the movable ball, so that a gap is formed between the groove block 27 and the buffer tube 7, and sundries are discharged out of the buffer tube 7 under the impact of water flow, thereby achieving the purpose of cleaning and discharging the sundries in the water pipe 1.
In conclusion, after the water quality purification pretreatment pipeline which is prevented from being blocked and can be automatically dredged is blocked by sundries through the filter screen 2, the acting force of water flow impacting the flow limiting block 4 is increased, so that the compression spring 3 of the flow limiting block 4 moves towards the left side, the flow limiting block 4 pulls the baffle 8 through the connecting wire, the baffle 8 rotates anticlockwise, the buffer cavity 7 is opened, the flow limiting block 4 drives the electrode plates 5 fixedly installed on the surface to move towards the left side while moving, the dead area of the two electrode plates 5 in the moving process is increased, further the capacitance is increased, the current of the spiral rod 9 electrically connected with the spiral rod is increased, the rotating speed of the spiral rod 9 is increased, further the sewage flows towards the buffer tube, the sewage discharge pressure of the water pipe 1 is relieved, the flow limiting block 4 moves towards the left to drive the sliding pin 11 fixedly connected with the flow limiting block to move towards the same direction, the sliding pin 11 drives the, the dead lever 17 drives the dredging block 18 to move towards the filter screen 2, and dredges the filter screen 2, so that the conveying efficiency of the sewage in the water pipe 1 is higher.
And, this prevent jam and water purification preliminary treatment pipeline that can dredge automatically, through debris entering buffer tube 7's inside, debris block up the right-hand member at filter disc 21, filter disc 21 drives slider 19 and moves to the left side under the drive of rivers, slider 19 drives slide rail 25 anticlockwise rotation through activity ball 24, and then makes the activity ball 24 of below move downwards, activity ball 24 pushes away channel block 27 downwards through push rod 26 for form the opening between channel block 27 and buffer tube 7, debris discharge buffer tube 7 under the impact of rivers, reached the purpose of clearing up the inside debris of water pipe 1 and discharged.
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 (7)
1. The utility model provides a prevent to block up and can automatic water purification preliminary treatment pipeline of mediation, includes water pipe (1), its characterized in that: the water pipe comprises a water pipe (1), a filter screen (2) is fixedly arranged inside the water pipe (1), a spring (3) is fixedly arranged at the right end of the filter screen (2), a current limiting block (4) is fixedly arranged at the right end of the spring (3), a plate electrode (5) is fixedly arranged at the left end of the current limiting block (4), a roller (6) is fixedly arranged at the top end of the inner wall of the water pipe (1), a buffer pipe (7) is fixedly arranged at the lower end of the water pipe (1), a baffle (8) is movably arranged at the top end of the buffer pipe (7), a spiral rod (9) is rotatably arranged at the right side of the bottom end of the buffer pipe (7), a sliding cavity (10) is formed in one end, close to the buffer pipe (7), of the outer wall of the water pipe (1), a sliding pin (11) is fixedly arranged inside the sliding cavity (10) at the, the surface sliding device is characterized in that a shaft sleeve (13) is arranged on the surface of the connecting rod (12), a connecting rod (14) is movably connected to the bottom of the phase near end of the shaft sleeve (13), a first telescopic rod (15) is fixedly arranged at the near end of the connecting rod (14), two ends of a second telescopic rod (16) are respectively fixedly arranged at the upper end and the lower end of the phase near end of the sliding pin (11), a dredging block (18) is fixedly arranged at the top end of one end, far away from the flow limiting block (4), of the sliding pin (11) through a fixed rod (17) fixedly arranged in a fixed mode, a sliding block (19) is slidably arranged at the bottom end of the inner wall of the sliding cavity (10), a filter disc (21) is rotatably arranged through a supporting rod (20), a rotating block (22) is movably arranged on the left surface of the filter disc (21), a fan sheet (23) is fixedly arranged at the right, the surface sliding connection of activity ball (24) has slide rail (25), the bottom fixed mounting of activity ball (24) has push rod (26), the bottom fixedly connected with groove block (27) of push rod (26).
2. The water quality purification pretreatment pipeline which prevents blockage and can be automatically dredged according to claim 1, is characterized in that: the number of the electrode plates (5) is two, and the other electrode plate is positioned at the top end of the inner wall of the water pipe (1) and is positioned on the left side of the electrode plate (5) at the left end of the flow limiting block (4).
3. The water quality purification pretreatment pipeline which prevents blockage and can be automatically dredged according to claim 1, is characterized in that: the buffer tube (7) is concave in shape.
4. The water quality purification pretreatment pipeline which prevents blockage and can be automatically dredged according to claim 1, is characterized in that: the right end of the baffle (8) passes through the roller (6) through a connecting line and is connected with the top end of the flow limiting block (4).
5. The water quality purification pretreatment pipeline which prevents blockage and can be automatically dredged according to claim 1, is characterized in that: the number of the sliding pins (11) is four, every two sliding pins are respectively arranged in an up-down and left-right symmetrical mode, the sliding pins (11) are movably connected through four connecting rods (12), and two ends of a second telescopic rod (16) are fixedly arranged between the upper sliding pin and the lower sliding pin (11).
6. The water quality purification pretreatment pipeline which prevents blockage and can be automatically dredged according to claim 1, is characterized in that: the screw rod (9) is electrically connected with the electrode plate (5).
7. The water quality purification pretreatment pipeline which prevents blockage and can be automatically dredged according to claim 1, is characterized in that: the groove block (27) is positioned at the bottom end of the inner wall of the buffer tube (7), one end of the groove block is rotatably connected with the buffer tube (7), and the other end of the groove block is clamped with the buffer tube (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011134512.9A CN112156522A (en) | 2020-10-21 | 2020-10-21 | Prevent to block up and quality of water purification preliminary treatment pipeline that can dredge automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011134512.9A CN112156522A (en) | 2020-10-21 | 2020-10-21 | Prevent to block up and quality of water purification preliminary treatment pipeline that can dredge automatically |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112156522A true CN112156522A (en) | 2021-01-01 |
Family
ID=73867786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011134512.9A Withdrawn CN112156522A (en) | 2020-10-21 | 2020-10-21 | Prevent to block up and quality of water purification preliminary treatment pipeline that can dredge automatically |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112156522A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112575869A (en) * | 2021-01-12 | 2021-03-30 | 郑州枣吟商贸有限公司 | Male urinal with garbage cleaning function for preventing water from leaking |
| CN112609808A (en) * | 2021-01-14 | 2021-04-06 | 成都易见密尔商贸有限公司 | Degreasing device of sewage drain pipe |
| CN112854190A (en) * | 2021-02-09 | 2021-05-28 | 叶淑林 | Multi-section spliced combined installation flexible permeable pipe |
| CN112939345A (en) * | 2021-01-29 | 2021-06-11 | 重庆工商大学 | Intelligent sewage treatment device and method |
-
2020
- 2020-10-21 CN CN202011134512.9A patent/CN112156522A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112575869A (en) * | 2021-01-12 | 2021-03-30 | 郑州枣吟商贸有限公司 | Male urinal with garbage cleaning function for preventing water from leaking |
| CN112609808A (en) * | 2021-01-14 | 2021-04-06 | 成都易见密尔商贸有限公司 | Degreasing device of sewage drain pipe |
| CN112939345A (en) * | 2021-01-29 | 2021-06-11 | 重庆工商大学 | Intelligent sewage treatment device and method |
| CN112854190A (en) * | 2021-02-09 | 2021-05-28 | 叶淑林 | Multi-section spliced combined installation flexible permeable pipe |
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| PB01 | Publication | ||
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Application publication date: 20210101 |