CN215026778U - Town type sewage treatment equipment - Google Patents
Town type sewage treatment equipment Download PDFInfo
- Publication number
- CN215026778U CN215026778U CN202121047574.6U CN202121047574U CN215026778U CN 215026778 U CN215026778 U CN 215026778U CN 202121047574 U CN202121047574 U CN 202121047574U CN 215026778 U CN215026778 U CN 215026778U
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- sewage treatment
- box body
- scraper
- impurity
- shaped
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- 239000010865 sewage Substances 0.000 title claims abstract description 39
- 230000007246 mechanism Effects 0.000 claims abstract description 47
- 238000001914 filtration Methods 0.000 claims abstract description 29
- 238000007906 compression Methods 0.000 claims abstract description 16
- 230000006835 compression Effects 0.000 claims abstract description 16
- 238000000926 separation method Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 12
- 238000001125 extrusion Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 abstract description 29
- 230000000694 effects Effects 0.000 abstract description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract description 2
- 235000017491 Bambusa tulda Nutrition 0.000 abstract description 2
- 241001330002 Bambuseae Species 0.000 abstract description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract description 2
- 239000011425 bamboo Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 238000007790 scraping Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Filtration Of Liquid (AREA)
Abstract
The utility model relates to the technical field of sewage treatment, and a town sewage treatment device is disclosed, when having solved present sewage treatment, the grid can not be to the problem that less impurity filtration influences the follow-up sewage treatment effect, and it includes the box, box upper end middle part is connected with the feeder hopper, and the inside upside of box is connected with the link, and the link upper end is connected with the arc cover, the utility model discloses, drive the rotation of scraper brush through first motor drive pivot to scrape the impurity on arc cover surface and move to the compression separating mechanism in, through such structure, can avoid blockking up when making the device filter more impurity, cooperate the fine filtration mechanism simultaneously, the fine filtration section of thick bamboo can further filter less impurity, thereby makes the sewage treatment anterior segment impurity filter effect better, makes things convenient for follow-up sewage treatment to purify; through the setting of compression separating mechanism, can extrude the impurity on the sieve for moisture in the impurity can be extruded, and has reduced the impurity volume, convenient storage.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment, specifically be a collection town formula sewage treatment device.
Background
Sewage treatment is a process of purifying sewage to meet the requirement of discharging the sewage into a certain water body or reusing the sewage, is widely applied to various fields of buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, and increasingly enters the daily life of common people.
All need filtering the impurity of great volume that contains in the sewage when to sewage treatment, then carry out a series of subsequent processing again, and current sewage treatment device is generally only filtered through the grid when handling to the impurity that contains in the sewage for relatively less impurity can not filter in the sewage, and then influences subsequent processing effect.
SUMMERY OF THE UTILITY MODEL
To the above situation, for overcoming prior art's defect, the utility model provides a collection town formula sewage treatment device, when effectual solved present sewage treatment, the grid can not filter the problem that influences follow-up sewage treatment effect to less impurity.
In order to achieve the above object, the utility model provides a following technical scheme: a town sewage treatment device comprises a box body, wherein the middle part of the upper end of the box body is connected with a feed hopper, the upper side inside the box body is connected with a connecting frame, the upper end of the connecting frame is connected with an arc cover, sieve pores are uniformly arranged on the surface of the arc cover, the middle part of the upper end of the connecting frame is connected with a first motor, the output end of the first motor is connected with a rotating shaft, the upper end of the rotating shaft extends to the upper end of the arc cover and is connected with a scraper brush, the lower end of the scraper brush is contacted with the upper end of the arc cover, the lower end of the connecting frame is connected with a conical hopper, a fine filtering mechanism is connected below the conical hopper, one side of the lower end of the fine filtering mechanism is connected with a scraper mechanism, one side below the scraper mechanism is provided with a discharge port relative to the side wall of the box body, the inner wall of the discharge port is connected with a guide chute, one side of the upper part of the outer wall of the box body is connected with a compression separation mechanism, a slag discharge port is communicated with the upper part between the compression separation mechanism and one side of the lower part of the box body is connected with a liquid guide pipeline, the liquid guide pipeline extends into the conical hopper, and one side of the lower part of the box body is connected with a liquid outlet pipeline.
Preferably, the fine filtering mechanism comprises a fine filtering cylinder, both ends of the inner side of the fine filtering cylinder are connected with a fixing sleeve through connecting rods, the inner part of the fixing sleeve is connected with a connecting shaft, both ends of the connecting shaft are respectively connected with the two sides of the inner wall of the box body in a rotating manner, and one end of the connecting shaft extends to the outer part of the box body and is connected with a second motor.
Preferably, the scraper mechanism includes U type frame, and U type frame lower extreme both sides all are connected with the fixed block, and fixed block lower extreme swing joint has the L template, and the L template is connected with the box inner wall, and the inside rotation of fixed block is connected with adjusting screw, and adjusting screw runs through to extend to the box outside, and U type frame upper end rear side is inlayed and is equipped with the scraper blade, and scraper blade upper end both sides all are connected with the baffle.
Preferably, compression separating mechanism includes the casing, casing upper portion one side is connected with the installation cover, installation cover internally connected with biax motor, two output ends of biax motor all are connected with the drive bevel gear, two drive bevel gear one ends all mesh and are connected with driven bevel gear, two driven bevel gear one ends all are connected with the lead screw, the lead screw runs through to extend to the inside rotation of casing and connects, the outside cover of lead screw is equipped with the stripper plate, stripper plate lower part both sides all run through and are connected with the guide arm, two guide arm both ends are connected in the inside both sides wall of casing respectively, the inside sieve that is connected with for the stripper plate lower extreme of casing, casing one end symmetric connection has the sealing door.
Preferably, the first motor is externally connected with a protective cover, a through hole is formed in the middle of the upper end of the protective cover corresponding to the penetrating position of the rotating shaft, and a sealing bearing is embedded in the through hole.
Preferably, the two sides of the outer end of the fine filter cylinder, which are close to the edges, are connected with check rings.
Preferably, the upper end of the U-shaped frame is provided with a mounting V-shaped groove, the scraper is positioned in the mounting V-shaped groove, and the length of the scraper is smaller than that of the fine filter cylinder.
Preferably, the middle part of the extrusion plate is provided with water filtering holes when the middle part of the extrusion plate is uniformly opened.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model discloses, through the setting of first motor, pivot, scraper brush, arc cover, after sewage got into the box, impurity was stayed on the arc by the coarse filtration, drive the scraper brush rotation through first motor drive pivot to scrape the impurity on arc cover surface to in compressing the separating mechanism, through such structure, can avoid blockking up when making the device filter great impurity, cooperate the fine filtration mechanism simultaneously, the fine filtration section of thick bamboo can further filter less impurity, thereby make sewage treatment anterior segment impurity filter effect better, make things convenient for follow-up sewage treatment to purify;
(2) through the arrangement of the compression separation mechanism, the double-shaft motor drives the two driving bevel gears to rotate and is in meshed transmission with the two driven bevel gears, so that the two lead screws drive the extrusion plate to move towards one side to extrude impurities on the sieve plate, the moisture in the impurities can be extruded out, the volume of the impurities is reduced, and the impurities are convenient to store;
(3) the scraper plate mechanism is arranged, the adjusting screw rod is rotated to enable the fixing block to drive the U-shaped frame to move, and then the distance between the scraper plate and the fine filter cylinder support is adjusted, so that the dirt on the surface of the fine filter cylinder is scraped, and the continuous operation of the fine filter mechanism is guaranteed.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the fine filtering mechanism of the present invention;
FIG. 3 is a schematic structural view of the scraping plate mechanism of the present invention;
FIG. 4 is a schematic structural view of the compressing and separating mechanism of the present invention;
FIG. 5 is a schematic view of the transmission structure of the lead screw of the present invention;
in the figure: 1. a box body; 2. a feed hopper; 3. a connecting frame; 4. an arc-shaped cover; 5. screening holes; 6. a first motor; 7. a rotating shaft; 8. a squeegee brush; 9. a conical hopper; 10. a fine filtration mechanism; 1001. a fine filter cartridge; 1002. a connecting rod; 1003. fixing a sleeve; 1004. a connecting shaft; 1005. a second motor; 11. a scraping plate mechanism; 1101. a U-shaped frame; 1102. a fixed block; 1103. an L-shaped plate; 1104. adjusting the screw rod; 1105. a squeegee; 1106. a baffle plate; 12. an outlet port; 13. a material guide chute; 14. a compression and separation mechanism; 1401. a housing; 1402. mounting a cover; 1403. a double-shaft motor; 1404. a drive bevel gear; 1405. a driven bevel gear; 1406. a screw rod; 1407. a pressing plate; 1408. a guide bar; 1409. a sieve plate; 1410. a sealing door; 15. a slag discharge port; 16. a liquid guiding pipeline; 17. a liquid outlet pipeline; 18. a protective cover; 19. a retainer ring; 20. and (5) filtering the water.
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 some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the first embodiment, as shown in fig. 1-5, the utility model comprises a box body 1, a feed hopper 2 is connected with the middle part of the upper end of the box body 1, a connecting frame 3 is connected with the upper side of the inner part of the box body 1, an arc cover 4 is connected with the upper end of the connecting frame 3, sieve pores 5 are evenly arranged on the surface of the arc cover 4, a first motor 6 is connected with the middle part of the upper end of the connecting frame 3, the output end of the first motor 6 is connected with a rotating shaft 7, the upper end of the rotating shaft 7 extends to the upper end of the arc cover 4 and is connected with a scraper brush 8, the lower end of the scraper brush 8 is contacted with the upper end of the arc cover 4, the lower end of the connecting frame 3 is connected with a cone-shaped bucket 9, a fine filtering mechanism 10 is connected below the cone-shaped bucket 9, a scraper mechanism 11 is connected on one side of the lower end of the fine filtering mechanism 10, a discharge port 12 is arranged on one side of the lower end of the scraper mechanism 11 opposite to the side wall of the box body 1, a guide chute 13 is connected on the inner wall of the discharge port 12, a compression separating mechanism 14 is connected on one side of the outer wall of the box body 1, a slag discharge port 15 is communicated between the compression and separation mechanism 14 and the upper part of the box body 1, one side of the lower part of the compression and separation mechanism 14 is connected with a liquid guide pipeline 16, the liquid guide pipeline 16 extends into the conical hopper 9, and one side of the lower part of the box body 1 is connected with a liquid outlet pipeline 17.
In the second embodiment, on the basis of the first embodiment, the fine filtering mechanism 10 includes a fine filtering cylinder 1001, two ends of the inner side of the fine filtering cylinder 1001 are both connected with a fixing sleeve 1003 through a connecting rod 1002, the fixing sleeve 1003 is internally connected with a connecting shaft 1004, two ends of the connecting shaft 1004 are respectively connected with two sides of the inner wall of the box 1 in a rotating manner, and one end of the connecting shaft 1004 extends to the box 1 and is externally connected with a second motor 1005.
In the third embodiment, on the basis of the first embodiment, the scraping plate mechanism 11 includes a U-shaped frame 1101, fixing blocks 1102 are connected to both sides of the lower end of the U-shaped frame 1101, an L-shaped plate 1103 is movably connected to the lower end of the fixing blocks 1102, the L-shaped plate 1103 is connected to the inner wall of the box body 1, an adjusting screw 1104 is rotatably connected to the inside of the fixing blocks 1102, the adjusting screw 1104 penetrates and extends to the outside of the box body 1, a scraping plate 1105 is embedded in the rear side of the upper end of the U-shaped frame 1101, and baffles 1106 are connected to both sides of the upper end of the scraping plate 1105.
Fourth embodiment, on the basis of first embodiment, the compression-separation mechanism 14 includes a housing 1401, one side of the upper portion of the housing 1401 is connected with an installation cover 1402, the inside of the installation cover 1402 is connected with a double-shaft motor 1403, two output ends of the double-shaft motor 1403 are connected with a driving bevel gear 1404, one ends of the two driving bevel gears 1404 are connected with driven bevel gears 1405 in a meshing manner, one ends of the two driven bevel gears 1405 are connected with a lead screw 1406, the lead screw 1406 runs through and extends to the inside of the housing 1401 to be connected in a rotating manner, an extrusion plate 1407 is sleeved outside the lead screw 1406, two sides of the lower portion of the extrusion plate 1407 are connected with guide rods 1408 in a running manner, two ends of the two guide rods 1408 are connected with two side walls inside the housing 1401 respectively, the lower end of the housing 1401 is connected with a screen plate 1409 relative to the extrusion plate 1407, and one end of the housing 1401 is symmetrically connected with a sealing door 1410.
Fifth, on the basis of the first embodiment, the first motor 6 is externally connected with a protective cover 18, a through hole is formed in the middle of the upper end of the protective cover 18 corresponding to the penetrating position of the rotating shaft 7, and a sealing bearing is embedded in the through hole.
Sixth, on the basis of the second embodiment, the retaining rings 19 are connected to both sides of the outer end of the fine filter cylinder 1001 near the edges, so that the two sides of the sewage tank on the surface can be prevented from overflowing when the fine filter cylinder 1001 rotates.
Seventh embodiment, on the basis of the third embodiment, an installation V-groove is formed at the upper end of the U-shaped frame 1101, the scraper 1105 is located in the installation V-groove, and the length of the scraper 1105 is smaller than that of the fine filter cylinder 1001, so that the scraper 1105 is located on the surface of the fine filter cylinder 1001 to scrape off dirt.
Eighth embodiment, on the basis of the fourth embodiment, the middle part of the pressing plate 1407 is provided with water filtering holes 20 when the middle part is uniformly opened, so that water can flow out during pressing.
The working principle is as follows: when the device is used, sewage is guided into the box body 1 from the feed hopper 2, and is filtered by the arc-shaped cover 4, large-volume impurities are left on the arc-shaped cover 4, the sewage flows downwards into the conical hopper 9 from the sieve holes 5, meanwhile, the first motor 6 drives the rotating shaft 7 to drive the scraper brush 8 to rotate, so that the impurities on the surface of the arc-shaped cover 4 are scraped into the compression and separation mechanism 14 by the scraper brush 8, the impurities scraped into the compression and separation mechanism 14 are located on the sieve plate 1409, water flows downwards through the sieve plate 1409, then the movable liquid guide pipeline 16 flows into the conical hopper 9, the coarsely filtered sewage in the conical hopper 9 flows downwards to the surface of the fine filter cylinder 1001 of the fine filter mechanism 10, the fine filter cylinder 1001 can filter the relatively small-volume impurities on the surface, the filtered sewage flows downwards under the self-weight, and the fine filter cylinder 1001 is driven by the second motor 1005 to rotate, so that the impurities attached to the surface rotate along with the fine filter cylinder 1001, then the impurities scraped by the scraper 1105 on the scraper mechanism 11 fall down into the material guiding chute 13 and are guided to be discharged, after the equipment runs for a period of time, the two driving bevel gears 1404 are driven to rotate by the double-shaft motor 1403, and then the two driven bevel gears 1405 are in meshed transmission with the driving bevel gears so that the two screw rods 1406 rotate, the extrusion plate 1407 moves to one side to extrude the impurities on the sieve plate 1409, so that the water in the impurities can be extruded out, and the extruded water flows back into the conical hopper 9 again and flows downwards for filtering treatment.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a town sewage treatment device, includes box (1), its characterized in that: the middle part of the upper end of the box body (1) is connected with a feed hopper (2), the upper side inside the box body (1) is connected with a connecting frame (3), the upper end of the connecting frame (3) is connected with an arc-shaped cover (4), sieve pores (5) are uniformly formed in the surface of the arc-shaped cover (4), the middle part of the upper end of the connecting frame (3) is connected with a first motor (6), the output end of the first motor (6) is connected with a rotating shaft (7), the upper end of the rotating shaft (7) extends to the upper end of the arc-shaped cover (4) and is connected with a scraper brush (8), the lower end of the scraper brush (8) is contacted with the upper end of the arc-shaped cover (4), the lower end of the connecting frame (3) is connected with a conical hopper (9), a fine filtering mechanism (10) is connected below the conical hopper (9), one side of the lower end of the fine filtering mechanism (10) is connected with a scraper mechanism (11), one side below the scraper mechanism (11) is provided with a discharge port (12) relative to the side wall of the box body (1), the inner wall of the discharge port (12) is connected with a guide chute (13), one side of the upper part of the outer wall of the box body (1) is connected with a compression and separation mechanism (14), a slag discharge port (15) is communicated between the compression and separation mechanism (14) and the upper part of the box body (1), one side of the lower part of the compression and separation mechanism (14) is connected with a liquid guide pipeline (16), the liquid guide pipeline (16) extends to the interior of the conical hopper (9), and one side of the lower part of the box body (1) is connected with a liquid outlet pipeline (17).
2. The ballasted sewage treatment facility of claim 1, wherein: the fine filtering mechanism (10) comprises a fine filtering cylinder (1001), both ends of the inner side of the fine filtering cylinder (1001) are connected with a fixed sleeve (1003) through a connecting rod (1002), the inside of the fixed sleeve (1003) is connected with a connecting shaft (1004), both ends of the connecting shaft (1004) are respectively connected with the two sides of the inner wall of the box body (1) in a rotating mode, and one end of the connecting shaft (1004) extends to the outer portion of the box body (1) and is connected with a second motor (1005).
3. The ballasted sewage treatment facility of claim 1, wherein: the scraper mechanism (11) comprises a U-shaped frame (1101), fixing blocks (1102) are connected to two sides of the lower end of the U-shaped frame (1101), an L-shaped plate (1103) is movably connected to the lower end of the fixing blocks (1102), the L-shaped plate (1103) is connected with the inner wall of the box body (1), an adjusting screw (1104) is connected to the inside of the fixing blocks (1102) in a rotating mode, the adjusting screw (1104) penetrates through the box body (1) and extends to the outside of the box body (1), a scraper (1105) is embedded in the rear side of the upper end of the U-shaped frame (1101), and baffles (1106) are connected to two sides of the upper end of the scraper (1105).
4. The ballasted sewage treatment facility of claim 1, wherein: the compression and separation mechanism (14) comprises a shell (1401), one side of the upper portion of the shell (1401) is connected with an installation cover (1402), the installation cover (1402) is internally connected with a double-shaft motor (1403), two output ends of the double-shaft motor (1403) are connected with a driving bevel gear (1404), one ends of the two driving bevel gears (1404) are all meshed with driven bevel gears (1405), one ends of the two driven bevel gears (1405) are connected with a lead screw (1406), the lead screw (1406) is connected with the shell (1401) in a penetrating mode in an internal rotating mode, an extrusion plate (1407) is sleeved outside the lead screw (1406), two sides of the lower portion of the extrusion plate (1407) are connected with guide rods (1408) in a penetrating mode, two ends of the guide rods (1408) are connected with two inner side walls of the shell (1401) respectively, the shell (1401) is connected with a sieve plate (1409) at the lower end of the extrusion plate (1407), and one end of the shell (1401) is symmetrically connected with a sealing door (1410).
5. The ballasted sewage treatment facility of claim 1, wherein: the outer portion of the first motor (6) is connected with a protective cover (18), a through hole is formed in the middle of the upper end of the protective cover (18) corresponding to the penetrating portion of the rotating shaft (7), and a sealing bearing is embedded in the through hole.
6. The ballasted sewage treatment facility of claim 2, wherein: two sides of the outer end of the thin filter cylinder (1001) close to the edge are connected with check rings (19).
7. The ballasted sewage treatment facility of claim 3, wherein: the upper end of the U-shaped frame (1101) is provided with a mounting V-shaped groove, the scraper (1105) is positioned in the mounting V-shaped groove, and the length of the scraper (1105) is less than that of the fine filter cylinder (1001).
8. The ballasted sewage treatment plant of claim 4, wherein: the middle part of the squeezing plate (1407) is also provided with a water filtering hole (20) when the middle part of the squeezing plate is uniformly opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121047574.6U CN215026778U (en) | 2021-05-17 | 2021-05-17 | Town type sewage treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121047574.6U CN215026778U (en) | 2021-05-17 | 2021-05-17 | Town type sewage treatment equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215026778U true CN215026778U (en) | 2021-12-07 |
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ID=79217642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121047574.6U Active CN215026778U (en) | 2021-05-17 | 2021-05-17 | Town type sewage treatment equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN215026778U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113041707A (en) * | 2021-05-17 | 2021-06-29 | 江西嘉陶环保科技有限公司 | Town type sewage treatment equipment |
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2021
- 2021-05-17 CN CN202121047574.6U patent/CN215026778U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113041707A (en) * | 2021-05-17 | 2021-06-29 | 江西嘉陶环保科技有限公司 | Town type sewage treatment equipment |
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Effective date of registration: 20231218 Address after: 332800 Lushan Industrial Park, Jiujiang City, Jiangxi Province Patentee after: JIANGXI JIATAO INORGANIC MATERIAL CO.,LTD. Address before: 332000 Lushan Industrial Park, Jiujiang City, Jiangxi Province Patentee before: Jiangxi Jiatao Environmental Protection Technology Co.,Ltd. |