CN214327352U - High-efficient container formula integration sewage treatment unit - Google Patents
High-efficient container formula integration sewage treatment unit Download PDFInfo
- Publication number
- CN214327352U CN214327352U CN202120485865.7U CN202120485865U CN214327352U CN 214327352 U CN214327352 U CN 214327352U CN 202120485865 U CN202120485865 U CN 202120485865U CN 214327352 U CN214327352 U CN 214327352U
- Authority
- CN
- China
- Prior art keywords
- sewage treatment
- fixedly connected
- treatment device
- filter screen
- container
- 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.)
- Active
Links
Images
Landscapes
- Filtration Of Liquid (AREA)
Abstract
The utility model belongs to the technical field of environmental protection, in particular to a high-efficiency container type integrated domestic sewage treatment device, wherein a collecting box is arranged at the side end of the container sewage treatment device; the water flowing pipe is fixedly connected to the bottom side end of the container sewage treatment device; the cleaning anti-blocking unit comprises a transmission assembly, a dredging assembly and a cleaning assembly; the transmission assembly is arranged in the container sewage treatment device; the dredging component is arranged at the bottom of the transmission component; the cleaning assembly is arranged at the bottom of the transmission assembly, when the filter screen is blocked by sludge and impurities, the generated weight drives the filter screen to press downwards to contact the supporting plate, so that the guide rod in the supporting plate extrudes the sludge and the impurities in the filter screen to be poured on the surface of the filter screen, the cleaning is carried out, the sludge and the impurities are prevented from being blocked inside the filter screen, the work of the sewage treatment device is influenced, and the work efficiency of the sewage treatment device is further improved.
Description
Technical Field
The utility model belongs to the technical field of the environmental protection, specific high-efficient container formula integration sewage treatment unit that says so.
Background
The integrated sewage treatment equipment integrates the primary sedimentation tank, the I, II-level contact oxidation tank, the secondary sedimentation tank and the sludge tank, and blast aeration is carried out in the I, II-level contact oxidation tank, so that a contact oxidation method and an activated sludge method are effectively combined, and the trouble of designing a sewage treatment process and constructing a foundation by a person is saved.
Among the prior art at present, in the sewage treatment process, because inside a large amount of impurity and the mud of containing of sewage, lead to on the scrubbing in-process, a large amount of mud and impurity block up on the filter screen for the filter screen is blockked up, can't filter, leads to the unable downward discharge of sewage, blocks up on the surface of filter screen, and then has reduced container sewage treatment plant work efficiency.
SUMMERY OF THE UTILITY MODEL
In order to compensate prior art's not enough, solve at the sewage treatment in-process, because inside a large amount of impurity and the mud of containing of sewage leads to on the scrubbing in-process, a large amount of mud and impurity block up on the filter screen for the filter screen is blockked up, can't filter, leads to the unable downward discharge of sewage, blocks up on the surface of filter screen, and then has reduced container sewage treatment plant work efficiency's problem, the utility model provides a high-efficient container formula integration sewage treatment plant.
The utility model provides a technical scheme that its technical problem adopted is: the utility model relates to a high-efficiency container type integrated domestic sewage treatment device, which comprises a container sewage treatment device, a cleaning anti-blocking unit, a collecting box and a water pipe; the cleaning anti-blocking unit is arranged inside the container sewage treatment device; the collecting box is arranged at the side end of the container sewage treatment device; the water flowing pipe is fixedly connected to the bottom side end of the container sewage treatment device;
the cleaning anti-blocking unit comprises a transmission assembly, a dredging assembly and a cleaning assembly; the transmission assembly is arranged in the container sewage treatment device; the dredging component is arranged at the bottom of the transmission component; the cleaning assembly is arranged at the bottom of the transmission assembly.
Preferably, the transmission assembly comprises a slide hole, a first spring, a filter screen, a blocking rod, a sealing plate, a sewage discharge hole, a first cavity, a sealing block and a second spring; the sliding hole is formed in the inner side wall of the container sewage treatment device; the filter screen is connected inside the sliding hole in a sliding manner; one end of the first spring is fixedly connected to the bottom of the filter screen, and the other end of the first spring is fixedly connected to the inner bottom wall of the sliding hole; the blocking rod is fixedly connected to the top of the filter screen; the sealing plate is fixedly connected to the inner side wall of the container sewage treatment device; the sewage discharge hole is formed in the sealing plate; the first cavity is formed at the side end of the sewage draining hole; the sealing block is connected to the inner side wall of the first cavity in a sliding mode; one end of the second spring is fixedly connected to the side end of the sealing block, and the other end of the second spring is fixedly connected to the inner side wall of the first cavity.
Preferably, the dredging component comprises a supporting plate, a guide rod, a sliding barrel, a bottom barrel, a sealing element, a conducting strip and an electric connecting piece; the supporting plate is fixedly connected to the inner side wall of the container sewage treatment device and is close to one side of the filter screen; the guide rod is fixedly connected to the top of the support plate; the sliding cylinder is fixedly connected to the bottom of the filter screen; the bottom cylinder is fixedly connected to the top of the supporting plate; the sealing element is fixedly connected to the top of the bottom barrel and is connected with the sliding barrel in a sealing and sliding manner; the conducting strip is fixedly connected to the inner top wall of the sliding barrel; the electric connecting piece is fixedly connected to the inner bottom wall of the bottom barrel.
Preferably, the cleaning assembly comprises an electric telescopic rod, a pushing block, a second cavity, a cleaning block, a third spring and a cleaning blade; the electric telescopic rod penetrates through and is fixedly connected to the inner side wall of the container sewage treatment device; the push block is fixedly connected to the side end of the electric telescopic rod; the second cavity is formed in the pushing block; the cleaning block is connected to the inner side wall of the second cavity in a sliding mode; one end of the third spring is fixedly connected to the top end of the cleaning block, and the other end of the third spring is fixedly connected to the inner top wall of the second cavity; the cleaning scraping blade is fixedly connected to the bottom of the cleaning block.
Preferably, the top of the supporting plate is fixedly connected with a plurality of guide rods, and the end parts of the guide rods are semi-arc-shaped.
Preferably, the top of the supporting plate is provided with a sealing telescopic rod, and the other end of the sealing telescopic rod is fixedly connected to the bottom of the filter screen.
The utility model has the advantages that:
1. the utility model provides a high-efficient container formula integration sewage treatment unit, through setting up the filter screen, the slide opening, first spring, the jam pole, the closing plate, the discharge orifice, the cavity, sealed piece, the second spring, mutually support between backup pad and the guide arm, when the filter screen is blockked up by mud and impurity, the weight of production drives the filter screen and pushes down, the contact support board, make guide arm in the backup pad extrude the surface of falling at the filter screen to the inside mud of filter screen and impurity, it is clean, avoid mud and impurity to block up inside the filter screen, influence sewage treatment unit's work, and then sewage treatment unit's work efficiency has been improved.
2. The utility model provides a high-efficient container formula integration sewage treatment plant, through setting up the conducting strip, connect the electric piece, the slide cartridge, the end section of thick bamboo, the sealing member, electric telescopic handle, the third spring, mutually support between clean doctor-bar and the collecting box, when mud and impurity are extruded the surface of filter screen by the guide arm, the electric telescopic handle circular telegram promotes clean doctor-bar, scrape the inside processing of collecting box with the mud and the impurity on filter screen surface, avoid the repeated jam of mud in the inside of filter screen, cause container sewage treatment plant can't work, and then improved the efficiency of purifying sewage.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:
fig. 1 is a cross-sectional view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is an enlarged view of a portion of FIG. 1 at B;
FIG. 4 is an enlarged view of a portion of FIG. 1 at C;
FIG. 5 is an enlarged view of a portion of FIG. 1 at D;
fig. 6 is a schematic structural view of the support plate and the guide rod of the present invention;
illustration of the drawings:
1. a container sewage treatment plant; 2. cleaning the anti-clogging unit; 21. a transmission assembly; 211. a slide hole; 212. a first spring; 213. a filter screen; 214. a jamming rod; 215. a sealing plate; 216. a sewage draining hole; 217. a cavity; 218. a sealing block; 219. a second spring; 22. a dredging component; 221. a support plate; 222. a guide bar; 223. a slide cylinder; 224. a bottom cylinder; 225. a seal member; 226. a conductive sheet; 227. connecting a power strip; 23. a cleaning assembly; 231. an electric telescopic rod; 232. a push block; 233. a second cavity; 234. a cleaning block; 235. a third spring; 236. cleaning a wiper blade; 3. a collection box; 4. a water flow pipe; 5. and (4) sealing the rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Specific examples are given below.
Referring to fig. 1-6, the utility model provides a high-efficiency container-type integrated domestic sewage treatment device, which comprises a container sewage treatment device 1, a cleaning anti-clogging unit 2, a collecting box 3 and a water pipe 4; the cleaning anti-clogging unit 2 is arranged inside the container sewage treatment device 1; the collecting box 3 is arranged at the side end of the container sewage treatment device 1; the water flowing pipe 4 is fixedly connected with the bottom side end of the container sewage treatment device 1;
the cleaning anti-clogging unit 2 comprises a transmission component 21, a dredging component 22 and a cleaning component 23; the transmission assembly 21 is arranged inside the container sewage treatment device 1; the dredging component 22 is arranged at the bottom of the transmission component 21; clean subassembly 23 is established in the bottom of drive assembly 21, and the during operation, when drive assembly 21 is blockked up by mud and impurity, the weight that produces drives drive assembly 21 and pushes down, contact mediation subassembly 22 for mediation subassembly 22 extrudes the inside mud of drive assembly 21 and impurity and falls on the surface of drive assembly 21, clean, avoid mud and impurity to block up the inside at drive assembly 21, influence container sewage treatment plant 1's work, and then improved container sewage treatment plant 1's work efficiency.
As an embodiment of the present invention, the transmission assembly 21 includes a slide hole 211, a first spring 212, a filter screen 213, a blocking rod 214, a sealing plate 215, a drainage hole 216, a first cavity 217, a sealing block 218, and a second spring 219; the sliding hole 211 is arranged on the inner side wall of the container sewage treatment device 1; the filter screen 213 is slidably connected to the inside of the sliding hole 211; one end of the first spring 212 is fixedly connected to the bottom of the filter screen 213, and the other end is fixedly connected to the inner bottom wall of the sliding hole 211; the blocking rod 214 is fixedly connected to the top of the filter screen 213; the sealing plate 215 is fixedly connected to the inner side wall of the container sewage treatment device 1; the drain hole 216 is opened inside the sealing plate 215; the first cavity 217 is arranged at the side end of the sewage discharge hole 216; the sealing block 218 is slidably connected to the inner side wall of the first cavity 217; one end of the second spring 219 is fixedly connected to the side end of the sealing block 218, the other end of the second spring 219 is fixedly connected to the inner side wall of the first cavity 217, and during operation, when the filter screen 213 filters sewage, the inside of the filter screen 213 is blocked by sludge and impurities due to the fact that the sewage contains a large amount of impurities and sludge, and therefore water cannot be drained downwards, the filter screen 213 is pressed downwards due to the weight of the sludge, when the filter screen 213 extrudes downwards, the first spring 212 is stressed to generate elastic force, when the filter screen 213 slides downwards, the blocking rod 214 slides downwards, the sealing block 218 slides towards the side end to seal the sewage discharge hole 216, the sewage on the upper portion of the sealing plate 215 is prevented from flowing downwards, and the sludge inside the filter screen 213 is convenient to clean.
As an embodiment of the present invention, the dredging component 22 comprises a supporting plate 221, a guide rod 222, a sliding cylinder 223, a bottom cylinder 224, a sealing member 225, a conducting strip 226 and an electric connecting piece 227; the supporting plate 221 is fixedly connected to the inner side wall of the container sewage treatment device 1 and is close to one side of the filter screen 213; the guide rods 222 are fixedly connected to the top of the support plate 221; the sliding cylinder 223 is fixedly connected to the bottom of the filter screen 213; the bottom cylinder 224 is fixedly connected to the top of the supporting plate 221; the sealing element 225 is fixedly connected to the top of the bottom cylinder 224, and is connected with a sliding cylinder 223 in a sealing and sliding manner; the conducting strip 226 is fixedly connected to the inner top wall of the sliding barrel 223; the electricity connection piece 227 rigid coupling is on the inside diapire of end section of thick bamboo 224, and during operation, when filter screen 213 glides downwards, extrusion slide cartridge 223 glides downwards for conducting strip 226 contacts electricity connection piece 227 and switches on, opens clean subassembly 23, and when filter screen 213 glides downwards and contacts backup pad 221, guide arm 222 is ejecting to the inside mud of filter screen 213 and impurity, avoids the inside of filter screen 213 to be blockked up by mud and impurity, can't work.
As an embodiment of the present invention, the cleaning assembly 23 includes an electric telescopic rod 231, a pushing block 232, a second cavity 233, a cleaning block 234, a third spring 235 and a cleaning blade 236; the electric telescopic rod 231 penetrates and is fixedly connected to the inner side wall of the container sewage treatment device 1; the push block 232 is fixedly connected to the side end of the electric telescopic rod 231; the second cavity 233 is arranged inside the push block 232; the cleaning block 234 is slidably connected to the inner side wall of the second cavity 233; one end of the third spring 235 is fixedly connected to the top end of the cleaning block 234, and the other end is fixedly connected to the inner top wall of the second cavity 233; the cleaning blade 236 is fixed to the bottom of the cleaning block 234, the top of the supporting plate 221 is fixed to a plurality of guide rods 222, the end of the guide rod 222 is semi-arc-shaped, the top of the support plate 221 is provided with a sealing telescopic rod 5, the other end of the sealing telescopic rod 5 is fixedly connected with the bottom of the filter screen 213, when in use, when the sludge and impurities are extruded to the surface of the filter screen 213 by the guide rod 222, the electric telescopic rod 231 is electrified to push the push block 232, the push block 232 drives the cleaning scraping blade 236 when sliding to the side end, the sludge and impurities on the surface of the filter screen 213 are scraped into the collecting box 3 for treatment, and by installing the sealing telescopic rod 5, the sliding hole 211 is sealed, so that the problem of sewage leakage is prevented, the phenomenon that the container sewage treatment device 1 cannot work due to the fact that sludge is repeatedly blocked inside the filter screen 213 is avoided, and the sewage purification efficiency is improved.
The working principle is as follows: when the filter screen 213 filters sewage, the inside of the filter screen 213 is blocked by sludge and impurities due to the large amount of impurities and sludge contained in the sewage, and cannot drain downwards, the filter screen 213 is pressed downwards by the weight of the sludge, when the filter screen 213 is pressed downwards, the first spring 212 is forced to generate elastic force, when the filter screen 213 slides downwards, the blocking rod 214 slides downwards to enable the sealing block 218 to slide towards the side end to seal the sewage discharge hole 216, so that the sewage on the upper part of the sealing plate 215 is prevented from flowing downwards, the sludge in the filter screen 213 is convenient to clean, when the filter screen 213 slides downwards, the pressing sliding cylinder 223 slides downwards to enable the conducting strip 226 to contact with the electric connecting piece 227 to be electrified to open the cleaning assembly 23, when the filter screen 213 slides downwards to contact with the supporting plate 221, the guide rod 222 ejects the sludge and impurities in the filter screen 213, avoid filter screen 213's inside to be blockked up by mud and impurity, can't work, when mud and impurity are extruded filter screen 213's surface by guide arm 222, electric telescopic handle 231 circular telegram promotes ejector pad 232, ejector pad 232 drives clean doctor-bar 236 when sliding to the side, scrape the inside of collecting box 3 with the mud and the impurity on filter screen 213 surface and handle, seal telescopic link 5 through the installation, seal up slide opening 211, prevent that the problem of leakage from appearing in sewage, avoid the inside of mud repeated jam at filter screen 213, cause container sewage treatment plant 1 can't work, and then improved the efficiency of purifying sewage.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.
Claims (6)
1. The utility model provides a high-efficient container formula integration sewage treatment unit, its characterized in that: comprises a container sewage treatment device (1), a cleaning anti-blocking unit (2), a collecting box (3) and a water flowing pipe (4); the cleaning anti-blocking unit (2) is arranged in the container sewage treatment device (1); the collecting box (3) is arranged at the side end of the container sewage treatment device (1); the water flowing pipe (4) is fixedly connected to the bottom side end of the container sewage treatment device (1);
the cleaning anti-blocking unit (2) comprises a transmission component (21), a dredging component (22) and a cleaning component (23); the transmission assembly (21) is arranged inside the container sewage treatment device (1); the dredging component (22) is arranged at the bottom of the transmission component (21); the cleaning component (23) is arranged at the bottom of the transmission component (21).
2. The efficient container type integrated domestic sewage treatment device according to claim 1, wherein: the transmission assembly (21) comprises a slide hole (211), a first spring (212), a filter screen (213), a blocking rod (214), a sealing plate (215), a sewage discharge hole (216), a first cavity (217), a sealing block (218) and a second spring (219); the sliding hole (211) is formed in the inner side wall of the container sewage treatment device (1); the filter screen (213) is connected inside the sliding hole (211) in a sliding way; one end of the first spring (212) is fixedly connected to the bottom of the filter screen (213), and the other end of the first spring is fixedly connected to the inner bottom wall of the sliding hole (211); the blocking rod (214) is fixedly connected to the top of the filter screen (213); the sealing plate (215) is fixedly connected to the inner side wall of the container sewage treatment device (1); the blowdown hole (216) is formed in the sealing plate (215); the first cavity (217) is arranged at the side end of the sewage discharge hole (216); the sealing block (218) is connected to the inner side wall of the first cavity (217) in a sliding mode; one end of the second spring (219) is fixedly connected with the side end of the sealing block (218), and the other end of the second spring is fixedly connected with the inner side wall of the first cavity (217).
3. The efficient container type integrated domestic sewage treatment device according to claim 2, wherein: the dredging component (22) comprises a supporting plate (221), a guide rod (222), a sliding cylinder (223), a bottom cylinder (224), a sealing element (225), a conducting strip (226) and an electric connecting piece (227); the supporting plate (221) is fixedly connected to the inner side wall of the container sewage treatment device (1) and is close to one side of the filter screen (213); the guide rod (222) is fixedly connected to the top of the support plate (221); the sliding cylinder (223) is fixedly connected to the bottom of the filter screen (213); the bottom barrel (224) is fixedly connected to the top of the supporting plate (221); the sealing element (225) is fixedly connected to the top of the bottom cylinder (224) and is connected with a sliding cylinder (223) in a sealing and sliding manner; the conducting strip (226) is fixedly connected to the inner top wall of the sliding barrel (223); the electric connecting piece (227) is fixedly connected to the inner bottom wall of the bottom barrel (224).
4. The efficient container type integrated domestic sewage treatment device according to claim 3, wherein: the cleaning assembly (23) comprises an electric telescopic rod (231), a push block (232), a second cavity (233), a cleaning block (234), a third spring (235) and a cleaning blade (236); the electric telescopic rod (231) is fixedly connected to the inner side wall of the container sewage treatment device (1) in a penetrating manner; the push block (232) is fixedly connected to the side end of the electric telescopic rod (231); the second cavity (233) is formed in the push block (232); the cleaning block (234) is connected to the inner side wall of the second cavity (233) in a sliding mode; one end of the third spring (235) is fixedly connected to the top end of the cleaning block (234), and the other end of the third spring is fixedly connected to the inner top wall of the second cavity (233); the cleaning blade (236) is fixedly connected to the bottom of the cleaning block (234).
5. The efficient container type integrated domestic sewage treatment device according to claim 4, wherein: the top of the supporting plate (221) is fixedly connected with a plurality of guide rods (222), and the end parts of the guide rods (222) are semi-arc-shaped.
6. The efficient container type integrated domestic sewage treatment device according to claim 5, wherein: the top of backup pad (221) is equipped with sealed telescopic link (5), and the other end rigid coupling of sealed telescopic link (5) is in the bottom of filter screen (213).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202120485865.7U CN214327352U (en) | 2021-03-05 | 2021-03-05 | High-efficient container formula integration sewage treatment unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202120485865.7U CN214327352U (en) | 2021-03-05 | 2021-03-05 | High-efficient container formula integration sewage treatment unit |
Publications (1)
Publication Number | Publication Date |
---|---|
CN214327352U true CN214327352U (en) | 2021-10-01 |
Family
ID=77888151
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202120485865.7U Active CN214327352U (en) | 2021-03-05 | 2021-03-05 | High-efficient container formula integration sewage treatment unit |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN214327352U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114602220A (en) * | 2022-03-16 | 2022-06-10 | 王士晶 | Sewage treatment plant convenient to clearance filter screen board |
-
2021
- 2021-03-05 CN CN202120485865.7U patent/CN214327352U/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114602220A (en) * | 2022-03-16 | 2022-06-10 | 王士晶 | Sewage treatment plant convenient to clearance filter screen board |
CN114602220B (en) * | 2022-03-16 | 2024-08-02 | 王士晶 | Sewage treatment device convenient to clearance filter screen plate |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN215026340U (en) | High-efficient filter equipment is used in waste water treatment | |
CN210945300U (en) | Sludge filter pressing device for sewage treatment | |
CN220100141U (en) | Foundation pit drainage device with automatic cleaning and blocking functions | |
CN214327352U (en) | High-efficient container formula integration sewage treatment unit | |
CN217661858U (en) | Dirt separator is used in waste water separation | |
CN210845435U (en) | Multi-stage filtration's reuse of reclaimed water equipment | |
CN215822438U (en) | Lignin secondary continuous filtration deslagging device | |
CN118087676A (en) | Automatic dredging device and method for blocking point of municipal drainage operation | |
CN216041035U (en) | Dirt filtering type self-flowing water draining hole for hydropower station | |
CN212417155U (en) | Wastewater treatment filtering device | |
CN211025301U (en) | Oil field water injection recoil type filtering dirt remover | |
CN113250151A (en) | Environment-friendly river course valve | |
CN221544424U (en) | Hydraulic engineering silt dewatering collection device | |
CN213433166U (en) | Primary filtering device for sewage treatment | |
CN213771573U (en) | Domestic sewage filtering device | |
CN215049598U (en) | Extrusion formula mud curing equipment for channel engineering | |
CN217557133U (en) | Water conservancy water drainage tank | |
CN217247233U (en) | Sewage filtering treatment device | |
CN217188168U (en) | Silt cleaning equipment for water conservancy construction | |
CN220013926U (en) | Promote and reform transform engineering with high strength escape canal | |
CN221732540U (en) | Easy-to-maintain filter | |
CN218501510U (en) | Prevent drainage mechanism of upper filter cloth ponding | |
CN221094720U (en) | Environment-friendly drainage tank for municipal engineering | |
CN217794752U (en) | Environment-friendly filtering device for industrial wastewater | |
CN221771649U (en) | Waste water filtering and screening device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |