CN113144716A - Municipal administration sewage treatment energy-concerving and environment-protective type filter equipment - Google Patents
Municipal administration sewage treatment energy-concerving and environment-protective type filter equipment Download PDFInfo
- Publication number
- CN113144716A CN113144716A CN202110359167.7A CN202110359167A CN113144716A CN 113144716 A CN113144716 A CN 113144716A CN 202110359167 A CN202110359167 A CN 202110359167A CN 113144716 A CN113144716 A CN 113144716A
- Authority
- CN
- China
- Prior art keywords
- box
- main body
- device main
- cavity
- fixedly connected
- Prior art date
- 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.)
- Granted
Links
- 239000010865 sewage Substances 0.000 title claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 238000001914 filtration Methods 0.000 claims abstract description 16
- 230000000149 penetrating effect Effects 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 2
- 239000010802 sludge Substances 0.000 abstract description 27
- 238000004140 cleaning Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002906 medical waste Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002699 waste material Substances 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
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
-
- 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
- B01D29/014—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 with curved filtering elements
-
- 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
- B01D29/52—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 in parallel connection
- B01D29/54—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 in parallel connection arranged concentrically or coaxially
-
- 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
- B01D29/70—Regenerating the filter material in the filter by forces created by movement of the filter element
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses an energy-saving and environment-friendly filtering device for municipal sewage treatment, which comprises a device main body, wherein a first cavity and a second cavity are arranged in the device main body, a device box is arranged on the inner wall of the first cavity in a fitting manner, a water inlet pipe penetrating into the device box is arranged at the top of the device main body, water outlet pipes are arranged at the bottoms of the first cavities at the two sides of the device main body, and movable grooves are arranged at the two sides of the device main body. According to the invention, water vapor can be sprayed out through the rotating shaft, so that sludge above the filter screen can be flushed away, the filter screen can filter sewage again conveniently, self-cleaning of the filter screen is realized, manual cleaning is not needed, manpower is reduced, meanwhile, the containing box can collect sludge in the collecting region under the second placing box, the containing box is only required to be opened periodically to treat sludge, automatic collection of sludge is realized, a machine is not required to be closed, and the sludge collecting device is simple and convenient.
Description
Technical Field
The invention relates to the field of municipal sewage treatment, in particular to an energy-saving and environment-friendly filtering device for municipal sewage treatment.
Background
The municipal facilities refer to public facilities built by government, legal people or citizen, and generally refer to various buildings, structures, equipment and the like in a planning area, facilities and auxiliary facilities such as urban roads (including bridges), urban rail transit, water supply, drainage, gas, heat, landscaping, environmental sanitation, road lighting, industrial waste medical waste, domestic sewage treatment equipment, domestic waste treatment equipment, fields and the like; the sewage treatment is a process for making sewage meet the water quality requirement of a certain water body for drainage or reuse and purifying the sewage, the sewage treatment is widely applied to various fields of buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, and the sewage treatment also increasingly enters the daily life of common people, and upstream suppliers in the sewage treatment industry mainly comprise manufacturers of sewage treatment equipment and sewage treatment agent suppliers, and the sewage treatment equipment and the sewage treatment agent suppliers belong to industries with fast development and good demand conditions.
Current municipal administration sewage treatment energy-concerving and environment-protective type filter equipment utilizes the filter screen to carry out long-time filtration back to sewage, because mud on the filter screen can slowly accumulate too much, current filter equipment often needs the equipment of suspending earlier and then utilizes the manpower resources to clear away the mud on the filter screen, can't carry out the automatically cleaning of filter screen, has both reduced work efficiency, by having wasted manpower resources and time simultaneously.
Disclosure of Invention
The invention aims to provide an energy-saving and environment-friendly filtering device for municipal sewage treatment to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a municipal sewage treatment energy-saving environment-friendly filtering device comprises a device main body, wherein a first cavity and a second cavity are arranged inside the device main body, a device box is arranged on the inner wall of the first cavity in a laminating manner, a water inlet pipe penetrating into the device box is arranged at the top of the device main body, water outlet pipes are arranged at the bottoms of the first cavities at the two sides of the device main body, movable grooves are arranged at the two sides of the device main body, movable blocks are connected inside the movable grooves in a sliding manner, one ends of the movable blocks are fixedly connected with the device box, first springs are arranged below the movable blocks at the two sides of the device main body, and the top ends of the first springs are fixedly connected with the bottoms of the movable blocks;
a through hole is arranged at the middle position of the bottom of the device box, a filter screen is arranged in the through hole, collecting areas are arranged on both sides of the through hole in the device box, through grooves are arranged on both sides of the through hole at the bottom of the device box, pipelines are rotatably connected on both sides of the inner wall of the through hole through bearings, one end of the pipeline is fixedly connected through a rotating shaft, a hole is arranged inside the rotating shaft, a communicating hole is arranged inside the rotating shaft and positioned outside the hole, the through grooves, the pipelines, the holes and the communication holes are communicated with each other, the communication holes are inclined towards the left end and the right end of the rotating shaft from inside to outside, the filter screen comprises at least four filter units, the cross section of each filter unit is of an arc structure, the radial left end and the radial right end of each filter unit are gradually raised towards the middle, and the number of the rotating shafts corresponds to the number of the filter units one by one and corresponds to the number of the filter units;
a first placing box is arranged at the bottom of the inner wall of the first cavity, a first piston is tightly attached to the inner wall of the first placing box, the top of the first piston is fixedly connected with a first connecting rod penetrating to the upper part of the first placing box, a first air outlet pipe is arranged at the bottom of one side of the first placing box, one end of the first air outlet pipe is communicated with the through groove, and a first air inlet pipe is arranged at the bottom of one side, away from the first air outlet pipe, of the first placing box;
the bottom of the device box is fixedly connected with fixed plates at two sides of the rotating shaft, one side of each fixed plate is rotatably connected with a rotating rod through a bearing, the outer side of each rotating rod is sleeved with a third gear and a second gear, the outer side of the pipeline is sleeved with a first gear, the outer side of the first gear is wound and connected with the second gear through a belt, and one end of the third gear is meshed with a rack;
a containing box is arranged on the outer side of the device main body and above the water outlet pipe, a second placing box is arranged on the outer side of the device main body and above the movable block, a second piston is tightly attached to the inner wall of the second placing box, the bottom of the second piston is fixedly connected with a second connecting rod penetrating to the lower portion of the second placing box, the bottom end of the second connecting rod is fixedly connected with the top of the movable block, a second air outlet pipe is arranged on the top of the second placing box, a second air inlet pipe is arranged on the top of one side of the second placing box, and the tail end of the second air inlet pipe is communicated with the top of the containing box;
the device main part outer wall is located the inside of containing box and is provided with the baffle, the below that the device bottom of the case portion is located the collecting region is provided with communicating pipe, and the one end and the containing box intercommunication of communicating pipe, the device bottom of the case portion is located one side fixedly connected with dead lever of communicating pipe, and the bottom fixedly connected with dog of dead lever, the bottom that the device main part outer wall is located the containing box inside is provided with the air vent, and air vent and first cavity intercommunication.
Preferably, the stopper is communicated with the vent hole, and one side of the stopper is tightly attached to the inner wall of the first cavity.
Preferably, the top of the baffle is hinged to the outer wall of the device main body through a hinge, and a torsion spring is arranged at the joint of the baffle and the device main body.
Preferably, the inside of second cavity is provided with the mounting panel, and one side of mounting panel is provided with the spout, the inside sliding connection of spout has the slider, and one side and the rack fixed connection of slider.
Preferably, the first air inlet pipe, the first air outlet pipe, the second air inlet pipe and the second air outlet pipe are all provided with check valves, the opening direction of the check valve inside the first air inlet pipe faces a first placing box connected with the first air inlet pipe, the opening direction of the check valve inside the first air outlet pipe faces a through groove, the opening direction of the check valve inside the second air inlet pipe faces a second placing box connected with the second air inlet pipe, and the opening direction of the check valve inside the second air outlet pipe faces the upper portion of the top end of the second air outlet pipe.
Preferably, the outside of pivot is provided with at least fifty archs, fifty protruding evenly distributed is in the outside of pivot, fifty bellied inside all is provided with the second spring, and the one end of second spring all fixedly connected with extends to protruding outside flexible piece.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention can filter the sludge through the arranged filter screen, so that the flowing water is the filtered clear water, when the sludge on the filter screen is excessive, the filter holes of the filter screen are blocked, the water level in the device box rises, the weight of the device box is further increased, the elastic force of the first spring is gradually smaller than the gravity of the device box, the device box drives the fixing plate to descend, the descending of the fixing plate drives the third gear to descend, the third gear is meshed with the rack, so the third gear rotates and drives the second gear to rotate in the descending process of the third gear, the second gear drives the first gear to rotate through the belt, the rotation of the first gear can drive the pipeline and the rotating shaft to rotate, meanwhile, in the initial state, the space below the first piston in the first placing box is filled with enough water, and when the fixing plate descends, the first connecting rod and the first piston are also driven to descend, the water in the space below the first piston in the first placing box sequentially passes through the first air outlet pipe, the through groove and the holes and is sprayed out from the inside of the communicating hole, the sprayed water vapor can flush the lower part of the filter screen, so that the sludge above the filter screen can be flushed away, the filter screen can conveniently filter sewage again, the filter screen is self-cleaned, manual cleaning is not needed, and manpower is reduced;
(2) the invention can drive the movable block to move downwards when the device box descends, the movable rod drives the second connecting rod and the second piston to move downwards, the second piston continuously absorbs the air in the containing box into the second containing box through the second air inlet pipe, at the moment, the pressure in the whole space is kept balanced due to the vent hole, but when the device box descends continuously, the vent hole is slowly blocked by the stop block which is driven to descend by the device box, the containing box is in a closed space, when the device box descends continuously, the second piston descends continuously and continuously extracts the air in the containing box, the containing box is in a negative pressure state, the baffle plate is opened towards the inside of the containing box, at the moment, the second piston descends continuously and sucks the sludge and part of water which are collected in the collecting area into the containing box through the communicating pipe, when the sludge on the filter screen is removed, water in the device box gradually flows away, the device box gradually recovers the original weight, the device box rises to the original position under the action of the first spring, the stop block rises and opens the vent hole, and the water in the storage box flows into the first cavity through the vent hole, so that only sludge remains in the storage box, and the storage box is only required to be opened periodically to treat the sludge, so that the automatic collection of the sludge is realized, and the device is simple and convenient;
(3) according to the invention, the water outlet pipe is slightly higher than the inner bottom surface of the first cavity, so that part of water is always remained in the first cavity, the first piston can conveniently absorb the water into the first placing box and spray the water out of the communicating hole, the utilization of water resources is effectively realized, the filter screen is not required to be cleaned by adding extra water, and the water resources are saved;
(4) the filter screen is composed of a plurality of filter units, the cross section of each filter unit is of an arc structure, the radial left end and the radial right end of each filter unit gradually rise to the middle, the number of the rotating shafts is in one-to-one correspondence with the filter units and corresponds to the rotating shafts, and the communicating holes in the rotating shafts incline from inside to outside to the left end and the right end of the rotating shafts, so that water sprayed from the communicating holes can perfectly diffuse sludge on the filter screen outwards from the middle of the filter screen and is collected by the collecting region, and the cleaning is more convenient;
(5) according to the invention, the plurality of bulges are arranged, the second spring jacks up the telescopic block in an initial state, and the length of the telescopic block outside the bulges is greater than the length of a gap between the rotating shaft and the filter screen, so that the telescopic block can be compressed by the filter screen when the rotating shaft rotates and the telescopic block contacts the filter screen, the rotation of the rotating shaft is not influenced, but the telescopic block can hit the filter screen at the moment when the telescopic block contacts the filter screen, and the filter screen can be continuously hit due to enough bulges, so that sludge on the filter screen can be more easily cleaned, and the cleaning effect is better.
Drawings
FIG. 1 is a schematic structural view of the present invention in example 1;
FIG. 2 is a partial structural view of the present invention in example 1;
FIG. 3 is a partial schematic view of the apparatus box of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 2 at A;
FIG. 5 is an enlarged view of a portion of FIG. 2 at B;
FIG. 6 is a schematic view of the internal structure of the storage box of the present invention;
FIG. 7 is a schematic structural diagram of a filter screen according to the present invention;
FIG. 8 is a schematic view of the connection structure of the rack and the mounting plate according to the present invention;
FIG. 9 is a partial structural view of the present invention in example 2;
fig. 10 is a schematic view of the internal structure of the projection in example 2.
In the figure: 1. a device main body; 101. a first cavity; 102. a second cavity; 2. a device case; 3. a water inlet pipe; 4. a movable groove; 5. a movable block; 6. a first spring; 7. a through hole; 8. a collection region; 9. a filter screen; 10. a through groove; 11. a pipeline; 12. a rotating shaft; 13. a hole; 14. a communicating hole; 15. a first gear; 16. a belt; 17. a second gear; 18. a fixing plate; 19. a rotating rod; 20. a third gear; 21. a rack; 22. a first connecting rod; 23. a first holding box; 24. a first piston; 25. a first air outlet pipe; 26. a first intake pipe; 27. a water outlet pipe; 28. a storage box; 29. a second intake pipe; 30. a second holding box; 31. a second piston; 32. a second connecting rod; 33. a second air outlet pipe; 34. a baffle plate; 35. a communicating pipe; 36. fixing the rod; 37. a stopper; 38. a vent hole; 39. mounting a plate; 40. a chute; 41. a slider; 42. a telescopic block; 43. a second spring; 44. and (4) protruding.
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.
Example 1:
referring to FIGS. 1-8: an energy-saving and environment-friendly filtering device for municipal sewage treatment comprises a device main body 1, wherein a first cavity 101 and a second cavity 102 are arranged inside the device main body 1, a device box 2 is arranged on the inner wall of the first cavity 101 in a laminating manner, a water inlet pipe 3 penetrating into the device box 2 is arranged at the top of the device main body 1, water outlet pipes 27 are arranged at the bottoms of the first cavity 101 at the two sides of the device main body 1, movable grooves 4 are arranged at the two sides of the device main body 1, movable blocks 5 are connected inside the movable grooves 4 in a sliding manner, one ends of the movable blocks 5 are fixedly connected with the device box 2, first springs 6 are arranged below the movable blocks 5 at the two sides of the device main body 1, and the top ends of the first springs 6 are fixedly connected with the bottoms of the movable blocks 5;
a through hole 7 is arranged at the middle position of the bottom of the device box 2, a filter screen 9 is arranged in the through hole 7, collecting regions 8 are arranged at the two sides of the through hole 7 in the device box 2, through grooves 10 are arranged at the two sides of the through hole 7 at the bottom of the device box 2, the two sides of the inner wall of the through hole 7 are rotatably connected with pipelines 11 through bearings, one end of the pipeline 11 is fixedly connected through a rotating shaft 12, a hole 13 is formed in the rotating shaft 12, a communicating hole 14 is formed in the rotating shaft 12 and located on the outer side of the hole 13, the through groove 10, the pipeline 11, the hole 13 and the communicating hole 14 are communicated with each other, the communicating hole 14 inclines towards the left end and the right end of the rotating shaft 12 from inside to outside, the filter screen 9 comprises at least four filter units, the cross section of each filter unit is of an arc-shaped structure, the radial left end and the radial right end of each filter unit gradually rise towards the middle, and the number of the rotating shafts 12 corresponds to the number of the filter units one by one;
a first placing box 23 is arranged at the bottom of the inner wall of the first cavity 101, a first piston 24 is tightly attached to the inner wall of the first placing box 23, the top of the first piston 24 is fixedly connected with a first connecting rod 22 penetrating to the upper side of the first placing box 23, a first air outlet pipe 25 is arranged at the bottom of one side of the first placing box 23, one end of the first air outlet pipe 25 is communicated with the through groove 10, and a first air inlet pipe 26 is arranged at the bottom of one side, away from the first air outlet pipe 25, of the first placing box 23;
the bottom of the device box 2 is fixedly connected with fixing plates 18 at two sides of the rotating shaft 12, one side of each fixing plate 18 is rotatably connected with a rotating rod 19 through a bearing, the outer side of each rotating rod 19 is sleeved with a third gear 20 and a second gear 17, the outer side of the pipeline 11 is sleeved with a first gear 15, the outer side of the first gear 15 is connected with the second gear 17 in a winding manner through a belt 16, and one end of the third gear 20 is meshed with a rack 21;
a containing box 28 is arranged on the outer side of the device main body 1 above the water outlet pipe 27, a second placing box 30 is arranged on the outer side of the device main body 1 above the movable block 5, a second piston 31 is tightly attached to the inner wall of the second placing box 30, a second connecting rod 32 penetrating below the second placing box 30 is fixedly connected to the bottom of the second piston 31, the bottom end of the second connecting rod 32 is fixedly connected with the top of the movable block 5, a second air outlet pipe 33 is arranged on the top of the second placing box 30, a second air inlet pipe 29 is arranged on the top of one side of the second placing box 30, and the tail end of the second air inlet pipe 29 is communicated with the top of the containing box 28;
the baffle 34 is arranged inside the containing box 28 on the outer wall of the device main body 1, the communicating pipe 35 is arranged below the collecting area 8 on the bottom of the device box 2, one end of the communicating pipe 35 is communicated with the containing box 28, the fixing rod 36 is fixedly connected to one side of the communicating pipe 35 on the bottom of the device box 2, the stopper 37 is fixedly connected to the bottom of the fixing rod 36, the vent 38 is arranged at the bottom end of the inner wall of the containing box 28 on the outer wall of the device main body 1, and the vent 38 is communicated with the first cavity 101.
Please refer to fig. 6, the stopper 37 is connected to the vent hole 38, one side of the stopper 37 is tightly attached to the inner wall of the first cavity 101, the top of the baffle 34 is hinged to the outer wall of the main body 1, a torsion spring is disposed at the connection between the baffle 34 and the main body 1, and the baffle 34 is engaged with one end of the communicating tube 35.
This kind of energy-concerving and environment-protective type filter equipment of municipal administration sewage treatment is stereoplasm elastic rubber through the material of the dog 37 that sets up, and then is convenient for carry out the shutoff to vent 38, baffle 34 and the cooperation of communicating pipe 35 simultaneously, when the dog 37 blocks up vent 38, baffle 34 can be opened under negative pressure state for communicating pipe 35 and containing box 28 intercommunication, and when dog 37 moves up and makes vent 38, baffle 34 can be plugged up the one end of communicating pipe 35 under the effect of torsional spring again.
Please refer to fig. 8, a mounting plate 39 is disposed inside the second cavity 102, a sliding slot 40 is disposed on one side of the mounting plate 39, a sliding block 41 is slidably connected inside the sliding slot 40, and one side of the sliding block 41 is fixedly connected to the rack 21.
This kind of energy-concerving and environment-protective type filter equipment of municipal administration sewage treatment can be convenient for carry on spacing fixedly to rack 21 through rack 21 and the slider 41 fixed connection who sets up to the rack 21 of being convenient for reciprocates.
Please refer to fig. 1 and 2, the first air inlet pipe 26, the first air outlet pipe 25, the second air inlet pipe 29 and the second air outlet pipe 33 are all provided with a check valve, the opening direction of the check valve in the first air inlet pipe 26 faces the first placing box 23 connected with the first air inlet pipe, the opening direction of the check valve in the first air outlet pipe 25 faces the through groove 10, the opening direction of the check valve in the second air inlet pipe 29 faces the second placing box 30 connected with the second air inlet pipe, and the opening direction of the check valve in the second air outlet pipe 33 faces the upper part of the top end of the second air outlet pipe 33.
This kind of energy-concerving and environment-protective type filter equipment of municipal administration sewage treatment mutually supports between messenger's first intake pipe 26, first outlet duct 25, second intake pipe 29 and the second outlet duct 33 that can be reasonable through each check valve that sets up, and then the device main part 1 of being convenient for can realize automatic clean filter screen 9, avoids the trouble of manual cleaning and the waste of time.
Referring to fig. 6, the length of the stopper 37 is at least 1.5 times the length of the vent hole 38, and a filter net is disposed inside the vent hole 38.
This kind of energy-concerving and environment-protective type filter equipment of municipal administration sewage treatment is greater than the length of air vent 38 through the length of the dog 37 that sets up and can be convenient for air vent 38 to have sufficient time to be closed by dog 37, and then be convenient for communicating pipe 35 to have sufficient time to absorb the inside mud of collecting region 8 and water into the inside of containing box 28.
Example 2:
please refer to fig. 9 and 10, the difference between the present embodiment and embodiment 1 is: at least fifty bulges 44 are arranged on the outer side of the rotating shaft 12, the fifty bulges 44 are uniformly distributed on the outer side of the rotating shaft 12, the second springs 43 are arranged inside the fifty bulges 44, and one ends of the second springs 43 are fixedly connected with the telescopic blocks 42 extending to the outer parts of the bulges 44.
In this embodiment, the number of the protrusions 44 is multiple, in an initial state, the second spring 43 jacks up the telescopic block 42, at the moment, the length of the telescopic block 42, which is located outside the protrusions 44, is greater than the length of a gap between the rotating shaft 12 and the filter screen 9, so that the telescopic block 42 can be compressed by the filter screen 9 when contacting the filter screen 9 when the rotating shaft 12 rotates, and the rotation of the rotating shaft 12 is not affected, but the telescopic block 42 can hit the filter screen 9 at the moment when contacting the filter screen 9, and because the protrusions 44 are sufficient, the filter screen 9 can be continuously hit, sludge on the filter screen 9 can be more easily cleaned, and the cleaning effect is better.
The rest is the same as in example 1.
The working principle is as follows: when the device is used, sewage flows into the device box 2 from the inside of the water inlet pipe 3, the filter screen 9 in the device box 2 can filter sludge, so that the sewage flows down to be filtered clean water, the filtered clean water flows out from the inside of the water outlet pipe 27, after the device is used for a long time, the sludge on the filter screen 9 is gradually excessive, the normal discharge of water flow is influenced, when the filter screen 9 is completely blocked by the sludge, the water flow cannot flow down, at the moment, the water quantity can be slowly accumulated in the device box 2, the device box 2 is gradually heavier, the integral gravity of the device box 2 can be gradually larger than the elastic force of the first spring 6, when the first spring 6 cannot support the integral weight of the device box 2, the device box 2 can drive the fixing plate 18 to descend, the descending of the fixing plate 18 can drive the third gear 20 to descend, and because the third gear 20 is meshed with the rack 21, the third gear 20 can rotate and drive the second gear 17 to rotate in the descending process, the second gear 17 drives the first gear 15 to rotate through the belt 16, the rotation of the first gear 15 can drive the pipeline 11 and the rotating shaft 12 to rotate, meanwhile, in an initial state, enough water is in the space below the first piston 24 in the first placing box 23, the first connecting rod 22 and the first piston 24 can be driven to descend when the fixing plate 18 descends, so that the water in the space below the first piston 24 in the first placing box 23 passes through the first air outlet pipe 25, the through groove 10 and the hole 13 in sequence and is sprayed out from the inside of the communication hole 14, the sprayed water vapor can flush the lower part of the filter screen 9, so that the sludge above the filter screen 9 can be flushed away, the filter screen 9 can filter the sewage again, the self-cleaning of the filter screen 9 is realized, manual cleaning is not needed, manpower is reduced, and a plurality of protrusions 44 are arranged on the surface of the rotating shaft 12, in an initial state, the second spring 43 jacks up the telescopic block 42, at this time, the length of the telescopic block 42 outside the protrusion 44 is greater than the length of a gap between the rotating shaft 12 and the filter screen 9, so that the filter screen 9 can be compressed when the rotating shaft 12 rotates and the telescopic block 42 contacts the filter screen 9, and the rotation of the rotating shaft 12 is not affected, but the telescopic block 42 can hit the filter screen 9 at a moment when the telescopic block 42 contacts the filter screen 9, because the number of the protrusions 44 is enough, the filter screen 9 can be continuously hit, so that sludge on the filter screen 9 can be more easily cleaned, the cleaning effect is better, meanwhile, the device box 2 can drive the movable block 5 to move downwards when descending, the movable rod 5 drives the second connecting rod 32 and the second piston 31 to move downwards, the second piston 31 continuously absorbs air in the storage box 28 into the second air inlet pipe 30 through the second air inlet pipe 29, at this time, the pressure in the whole space is balanced due to the vent hole 38, but when the device case 2 continues to descend, the vent hole 38 is slowly blocked by the stopper 37 which is moved to descend by the device case 2, the inside of the storage case 28 is in a closed space, when the device case 2 continues to descend, the second piston 31 continues to descend and continuously pumps the air in the inside of the storage case 28, the inside of the storage case 28 is in a negative pressure state, so that the baffle 34 is opened towards the inside of the storage case 28, when the second piston 31 continues to descend, the sludge and part of water which are collected in the collecting area 8 previously are sucked into the inside of the storage case 28 through the communication pipe 35, when the sludge on the filter screen 9 is removed, the water in the device case 2 gradually flows away, when the device case 2 gradually recovers the original weight, the device case 2 rises to the original position under the action of the first spring 6, at this moment, the stop block 37 rises and opens the vent hole 38, and water in the storage box 28 can flow into the first cavity 101 through the vent hole 38, so that only sludge in the storage box 28 is left, and only the storage box 28 needs to be opened periodically to treat the sludge, so that automatic collection of the sludge is realized, and the sludge collecting device is simple and convenient.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (6)
1. The energy-saving and environment-friendly filtering device for municipal sewage treatment comprises a device main body (1) and is characterized in that a first cavity (101) and a second cavity (102) are arranged inside the device main body (1), a device box (2) is arranged on the inner wall of the first cavity (101), a water inlet pipe (3) penetrating into the device box (2) is arranged at the top of the device main body (1), water outlet pipes (27) are arranged at the two sides of the device main body (1) and positioned at the bottom of the first cavity (101), movable grooves (4) are arranged at the two sides of the device main body (1), movable blocks (5) are slidably connected inside the movable grooves (4), one ends of the movable blocks (5) are fixedly connected with the device box 2, first springs (6) are arranged below the movable blocks (5) at the two sides of the device main body (1), the top end of the first spring (6) is fixedly connected with the bottom of the movable block (5);
the device is characterized in that a through hole (7) is formed in the middle of the bottom of the device box (2), a filter screen (9) is arranged inside the through hole (7), collecting areas (8) are arranged on two sides of the through hole (7) inside the device box (2), through grooves (10) are arranged on two sides of the through hole (7) at the bottom of the device box (2), pipelines (11) are rotatably connected to two sides of the inner wall of the through hole (7) through bearings, one end of each pipeline (11) is fixedly connected with each other through a rotating shaft (12), holes (13) are formed in the rotating shaft (12), communication holes (14) are formed in the outer sides of the holes (13) inside the rotating shaft (12), the through grooves (10), the pipelines (11), the holes (13) and the communication holes (14) are communicated with each other, the communication holes (14) are inclined towards the left end and the right end of the rotating shaft (12) from, the cross section of each filtering unit is of an arc-shaped structure, the radial left end and the radial right end of each filtering unit gradually rise towards the middle, and the number of the rotating shafts 12 corresponds to the number of the filtering units one by one and corresponds to the number of the filtering units;
a first placing box (23) is arranged at the bottom of the inner wall of the first cavity (101), a first piston (24) is tightly attached to the inner wall of the first placing box (23), the top of the first piston (24) is fixedly connected with a first connecting rod (22) penetrating to the upper part of the first placing box (23), a first air outlet pipe (25) is arranged at the bottom of one side of the first placing box (23), one end of the first air outlet pipe (25) is communicated with the through groove (10), and a first air inlet pipe (26) is arranged at the bottom of one side, away from the first air outlet pipe (25), of the first placing box (23);
the bottom of the device box (2) is positioned on two sides of the rotating shaft (12) and is fixedly connected with a fixed plate (18), one side of the fixed plate (18) is rotatably connected with a rotating rod (19) through a bearing, a third gear (20) and a second gear (17) are sleeved on the outer side of the rotating rod (19), a first gear (15) is sleeved on the outer side of the pipeline (11), the outer side of the first gear (15) is connected with the second gear (17) in a winding mode through a belt (16), and one end of the third gear (20) is meshed with a rack (21);
a containing box (28) is arranged above the water outlet pipe (27) on the outer side of the device main body (1), a second placing box (30) is arranged above the movable block (5) on the outer side of the device main body (1), a second piston (31) is tightly attached to the inner wall of the second placing box (30), a second connecting rod (32) penetrating below the second placing box (30) is fixedly connected to the bottom of the second piston (31), the bottom end of the second connecting rod (32) is fixedly connected with the top of the movable block (5), a second air outlet pipe (33) is arranged at the top of the second placing box (30), a second air inlet pipe (29) is arranged at the top of one side of the second placing box (30), and the tail end of the second air inlet pipe (29) is communicated with the top of the containing box (28);
the device is characterized in that a baffle (34) is arranged inside the outer wall of the device main body (1) and located in the containing box (28), a communicating pipe (35) is arranged below the bottom of the device box (2) and located in the collecting area (8), one end of the communicating pipe (35) is communicated with the containing box (28), a fixing rod (36) is fixedly connected to one side of the bottom of the device box (2) and located in the communicating pipe (35), a stop block (37) is fixedly connected to the bottom of the fixing rod (36), an air vent (38) is arranged at the bottom of the outer wall of the device main body (1) and located in the containing box (28), and the air vent (38) is communicated with the first cavity (101).
2. The municipal sewage treatment energy-saving and environment-friendly filtering device according to claim 1, characterized in that: the stop block (37) is communicated with the vent hole (38), and one side of the stop block (37) is tightly attached to the inner wall of the first cavity (101).
3. The municipal sewage treatment energy-saving and environment-friendly filtering device according to claim 1, characterized in that: the top of the baffle (34) is hinged to the outer wall of the device main body (1) through a hinge, and a torsion spring is arranged at the joint of the baffle (34) and the device main body (1).
4. The municipal sewage treatment energy-saving and environment-friendly filtering device according to claim 1, characterized in that: the inside of second cavity (102) is provided with mounting panel (39), and one side of mounting panel (39) is provided with spout (40), the inside sliding connection of spout (40) has slider (41), and one side and rack (21) fixed connection of slider (41).
5. The municipal sewage treatment energy-saving and environment-friendly filtering device according to claim 1, characterized in that: the inside of first intake pipe (26), first outlet duct (25), second intake pipe (29) and second outlet duct (33) all is provided with the check valve, the opening direction orientation of the inside check valve of first intake pipe (26) is rather than the first case (23) of placing of being connected, the opening direction orientation of the inside check valve of first outlet duct (25) leads to groove (10), case (30) are placed rather than the second of being connected to the opening direction orientation of the inside check valve of second intake pipe (29), the opening direction orientation of the inside check valve of second outlet duct (33) is towards the top on second outlet duct (33) top.
6. The municipal sewage treatment energy-saving and environment-friendly filtering device according to claim 1, characterized in that: the outer side of the rotating shaft (12) is provided with at least fifty bulges (44), the fifty bulges (44) are uniformly distributed on the outer side of the rotating shaft (12), the fifty bulges (44) are internally provided with second springs (43), and one ends of the second springs (43) are fixedly connected with telescopic blocks (42) extending to the outer parts of the bulges (44).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110359167.7A CN113144716B (en) | 2021-04-02 | 2021-04-02 | Municipal administration sewage treatment energy-concerving and environment-protective type filter equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110359167.7A CN113144716B (en) | 2021-04-02 | 2021-04-02 | Municipal administration sewage treatment energy-concerving and environment-protective type filter equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113144716A true CN113144716A (en) | 2021-07-23 |
| CN113144716B CN113144716B (en) | 2022-10-14 |
Family
ID=76886257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110359167.7A Active CN113144716B (en) | 2021-04-02 | 2021-04-02 | Municipal administration sewage treatment energy-concerving and environment-protective type filter equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113144716B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113942757A (en) * | 2021-10-20 | 2022-01-18 | 翟选菊 | Marine transport container |
| CN114192101A (en) * | 2021-11-25 | 2022-03-18 | 江苏正迈过滤技术有限公司 | Novel filtering filler and composite die for production thereof |
| CN114984635A (en) * | 2022-04-08 | 2022-09-02 | 中山市源盛服装印花材料有限公司 | Intelligent sewage treatment equipment of positioning paper production system and treatment process thereof |
| CN116715401A (en) * | 2023-07-31 | 2023-09-08 | 江苏新神环有限公司 | Integrated buried domestic sewage treatment system and process thereof |
Citations (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3833123A (en) * | 1970-02-18 | 1974-09-03 | A Walker | Filters |
| US3846309A (en) * | 1971-03-23 | 1974-11-05 | Alfa Laval Ab | Rotary conical strainer drum |
| CA2021346A1 (en) * | 1989-07-18 | 1991-01-19 | Walter Klein | Filtering apparatus for separating solid and suspended matter from a liquid |
| US5085771A (en) * | 1991-05-15 | 1992-02-04 | Huang Tien Hung | Centrifugal filter casing |
| US20030042194A1 (en) * | 2001-07-25 | 2003-03-06 | Attilio Turchetti | Filter for liquid products |
| AT501462A4 (en) * | 2005-08-25 | 2006-09-15 | Abz Zierler Ges M B H & Co Kg | Apparatus for continuously separating solid particles from turbid liquid, comprises horizontal rotating drum of filter fabric with axially movable, external cleaning nozzles for pressurized |
| JP2009285584A (en) * | 2008-05-29 | 2009-12-10 | Mitaka Kogyosho:Kk | Residue removing device in filter machine |
| US20100018909A1 (en) * | 2008-07-22 | 2010-01-28 | Smith Jeffrey D | Vibrating screen |
| CN101822916A (en) * | 2009-03-04 | 2010-09-08 | 中芯国际集成电路制造(上海)有限公司 | Liquid filter |
| EP2590798A1 (en) * | 2010-07-05 | 2013-05-15 | EREMA Engineering Recycling Maschinen und Anlagen Gesellschaft m.b.H. | Filtering device for fluids |
| CN205759985U (en) * | 2016-05-26 | 2016-12-07 | 江苏东顺新能源科技有限公司 | A kind of cleaning plant for papermaking filter screen |
| CN106902561A (en) * | 2017-04-25 | 2017-06-30 | 冯云鹏 | A kind of sewage disposal debris separation equipment |
| CN107029854A (en) * | 2017-05-11 | 2017-08-11 | 孔祥枫 | A kind of ore extraction Multi-stage crushing plant |
| CN107362596A (en) * | 2017-07-20 | 2017-11-21 | 盐城文治机械有限公司 | A kind of sewage purification pretreatment unit |
| CN206777889U (en) * | 2017-04-26 | 2017-12-22 | 安徽金龙机械有限公司 | A kind of comprehensive spray block clearing mechanism for evaporator |
| CN108129008A (en) * | 2018-02-08 | 2018-06-08 | 河南工程学院 | For the sludge treatment equipment of municipal sewage plant |
| CN108160962A (en) * | 2018-02-28 | 2018-06-15 | 陈华 | A kind of pneumatic backwash aerial fog nozzle of water route filtering |
| CN207641110U (en) * | 2017-12-14 | 2018-07-24 | 深圳市兴达扬机电安装有限公司 | A kind of sewage disposal device |
| CN207869647U (en) * | 2017-10-10 | 2018-09-18 | 安徽安能建设集团有限公司 | A kind of ditcher mechanism of Landscape Construction ditching machine |
| CN108926905A (en) * | 2018-08-29 | 2018-12-04 | 平湖市万顺达机械有限公司 | Apparatus for treating sewage |
| CN209188345U (en) * | 2018-11-12 | 2019-08-02 | 佛山市固昊建材有限公司 | A kind of mortar production double filtration dust processing equipment |
| CN110627247A (en) * | 2018-06-21 | 2019-12-31 | 胡正云 | Chemical plant sewage treatment purifier |
| CN111675360A (en) * | 2020-05-08 | 2020-09-18 | 安徽工程大学 | Environment-friendly domestic sewage filtration treatment device |
| CN211975330U (en) * | 2020-03-16 | 2020-11-20 | 紫气压缩机(上海)有限公司 | Oil-free water lubrication air compressor |
| CN112090172A (en) * | 2020-09-04 | 2020-12-18 | 安徽省玉环清洗设备制造有限公司 | Cleaning machine for cleaning filter screen |
-
2021
- 2021-04-02 CN CN202110359167.7A patent/CN113144716B/en active Active
Patent Citations (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3833123A (en) * | 1970-02-18 | 1974-09-03 | A Walker | Filters |
| US3846309A (en) * | 1971-03-23 | 1974-11-05 | Alfa Laval Ab | Rotary conical strainer drum |
| CA2021346A1 (en) * | 1989-07-18 | 1991-01-19 | Walter Klein | Filtering apparatus for separating solid and suspended matter from a liquid |
| US5085771A (en) * | 1991-05-15 | 1992-02-04 | Huang Tien Hung | Centrifugal filter casing |
| US20030042194A1 (en) * | 2001-07-25 | 2003-03-06 | Attilio Turchetti | Filter for liquid products |
| AT501462A4 (en) * | 2005-08-25 | 2006-09-15 | Abz Zierler Ges M B H & Co Kg | Apparatus for continuously separating solid particles from turbid liquid, comprises horizontal rotating drum of filter fabric with axially movable, external cleaning nozzles for pressurized |
| JP2009285584A (en) * | 2008-05-29 | 2009-12-10 | Mitaka Kogyosho:Kk | Residue removing device in filter machine |
| US20100018909A1 (en) * | 2008-07-22 | 2010-01-28 | Smith Jeffrey D | Vibrating screen |
| CN101822916A (en) * | 2009-03-04 | 2010-09-08 | 中芯国际集成电路制造(上海)有限公司 | Liquid filter |
| EP2590798A1 (en) * | 2010-07-05 | 2013-05-15 | EREMA Engineering Recycling Maschinen und Anlagen Gesellschaft m.b.H. | Filtering device for fluids |
| CN205759985U (en) * | 2016-05-26 | 2016-12-07 | 江苏东顺新能源科技有限公司 | A kind of cleaning plant for papermaking filter screen |
| CN106902561A (en) * | 2017-04-25 | 2017-06-30 | 冯云鹏 | A kind of sewage disposal debris separation equipment |
| CN206777889U (en) * | 2017-04-26 | 2017-12-22 | 安徽金龙机械有限公司 | A kind of comprehensive spray block clearing mechanism for evaporator |
| CN107029854A (en) * | 2017-05-11 | 2017-08-11 | 孔祥枫 | A kind of ore extraction Multi-stage crushing plant |
| CN107362596A (en) * | 2017-07-20 | 2017-11-21 | 盐城文治机械有限公司 | A kind of sewage purification pretreatment unit |
| CN207869647U (en) * | 2017-10-10 | 2018-09-18 | 安徽安能建设集团有限公司 | A kind of ditcher mechanism of Landscape Construction ditching machine |
| CN207641110U (en) * | 2017-12-14 | 2018-07-24 | 深圳市兴达扬机电安装有限公司 | A kind of sewage disposal device |
| CN108129008A (en) * | 2018-02-08 | 2018-06-08 | 河南工程学院 | For the sludge treatment equipment of municipal sewage plant |
| CN108160962A (en) * | 2018-02-28 | 2018-06-15 | 陈华 | A kind of pneumatic backwash aerial fog nozzle of water route filtering |
| CN110627247A (en) * | 2018-06-21 | 2019-12-31 | 胡正云 | Chemical plant sewage treatment purifier |
| CN108926905A (en) * | 2018-08-29 | 2018-12-04 | 平湖市万顺达机械有限公司 | Apparatus for treating sewage |
| CN209188345U (en) * | 2018-11-12 | 2019-08-02 | 佛山市固昊建材有限公司 | A kind of mortar production double filtration dust processing equipment |
| CN211975330U (en) * | 2020-03-16 | 2020-11-20 | 紫气压缩机(上海)有限公司 | Oil-free water lubrication air compressor |
| CN111675360A (en) * | 2020-05-08 | 2020-09-18 | 安徽工程大学 | Environment-friendly domestic sewage filtration treatment device |
| CN112090172A (en) * | 2020-09-04 | 2020-12-18 | 安徽省玉环清洗设备制造有限公司 | Cleaning machine for cleaning filter screen |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113942757A (en) * | 2021-10-20 | 2022-01-18 | 翟选菊 | Marine transport container |
| CN114192101A (en) * | 2021-11-25 | 2022-03-18 | 江苏正迈过滤技术有限公司 | Novel filtering filler and composite die for production thereof |
| CN114192101B (en) * | 2021-11-25 | 2023-04-21 | 江苏正迈过滤技术有限公司 | Novel filter packing and production is with compound mould thereof |
| CN114984635A (en) * | 2022-04-08 | 2022-09-02 | 中山市源盛服装印花材料有限公司 | Intelligent sewage treatment equipment of positioning paper production system and treatment process thereof |
| CN114984635B (en) * | 2022-04-08 | 2023-09-05 | 中山市源盛服装印花材料有限公司 | Intelligent sewage treatment equipment and process for positioning paper production system |
| CN116715401A (en) * | 2023-07-31 | 2023-09-08 | 江苏新神环有限公司 | Integrated buried domestic sewage treatment system and process thereof |
| CN116715401B (en) * | 2023-07-31 | 2023-11-28 | 江苏新神环有限公司 | Integrated buried domestic sewage treatment system and process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113144716B (en) | 2022-10-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113144716B (en) | Municipal administration sewage treatment energy-concerving and environment-protective type filter equipment | |
| CN206881271U (en) | A kind of wastewater filtering device with cleaning function | |
| CN108840460B (en) | Conveying type sewage stage treatment environment-friendly device | |
| CN108619811B (en) | High-efficiency dust recovery bin | |
| CN214246043U (en) | Sponge is rainwater regulation pond for city | |
| CN112554303A (en) | Intelligent waterlogging prevention flood diversion system device and method based on smart sponge city | |
| CN110127887A (en) | A kind of sewage treatment settling apparatus | |
| CN109939497A (en) | A kind of portable type air cleaning facility with long service life | |
| CN213204049U (en) | Municipal administration surface of water rubbish energy-saving collection device | |
| CN212104443U (en) | Building drainage and sewage pipeline device convenient to clean and maintain | |
| CN116212489A (en) | Sewage treatment device for water ecological environment treatment | |
| CN210786431U (en) | Convenient fixed sewage purification device for environmental protection | |
| CN214634523U (en) | Municipal sewage environmental protection handles filter equipment | |
| CN111939704B (en) | Dust collector for building engineering | |
| CN212757496U (en) | Domestic sewage filtering device | |
| CN211659367U (en) | Domestic sewage treatment equipment with layered filtering structure | |
| CN115779578B (en) | Dust collector for atmospheric pollution treatment | |
| CN218233643U (en) | A rainwater collection device for in landscape garden | |
| CN214245912U (en) | Sponge urban rainwater collection, regulation and storage recycling system | |
| CN220935124U (en) | Photovoltaic module surface cleaning device | |
| CN213038530U (en) | Drainage pipe device that prevents blockking up of municipal construction | |
| CN216809817U (en) | Cleaning device for cleaning suspended matters on water surface | |
| CN111643940B (en) | Dirt box assembly for tunnel cleaning vehicle and tunnel cleaning vehicle | |
| CN213771526U (en) | Sewage treatment equipment for city | |
| CN217896208U (en) | Bridge floor sewage drainage structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |