CN213141696U - A graded environmental protection engineering sewage processor - Google Patents
A graded environmental protection engineering sewage processor Download PDFInfo
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- CN213141696U CN213141696U CN202021336822.4U CN202021336822U CN213141696U CN 213141696 U CN213141696 U CN 213141696U CN 202021336822 U CN202021336822 U CN 202021336822U CN 213141696 U CN213141696 U CN 213141696U
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Abstract
本实用新型公开了一种分级式环保工程用污水处理器，包括处理柜，所述处理柜的顶部固定安装有过滤柜，过滤柜的顶部固定安装有进水管，进水管与过滤柜内部相连通，过滤柜内固定安装有弧形过滤网，弧形过滤网的上方设有转轴，转轴上固定安装有螺旋叶轮，过滤柜的一侧固定安装有排渣管，排渣管与过滤柜内部相连通，转轴和螺旋叶轮的一端均延伸至排渣管内，过滤柜远离排渣管的一侧内壁上开设有安装孔。本实用新型设计合理，实用性好，实现了对污水进行分级净化处理，能够对污水中的杂质颗粒等进行过滤和吸附净化，对污水的净化效果好，不易造成环境二次污染，而且便于把过滤后的杂质颗粒排出，操作便捷。
The utility model discloses a graded environmental protection engineering sewage processor, comprising a treatment cabinet, a filter cabinet is fixedly installed on the top of the treatment cabinet, a water inlet pipe is fixedly installed on the top of the filter cabinet, and the water inlet pipe is communicated with the inside of the filter cabinet , A curved filter screen is fixedly installed in the filter cabinet, a rotating shaft is arranged above the arc-shaped filter screen, a spiral impeller is fixedly installed on the rotating shaft, and a slag discharge pipe is fixedly installed on one side of the filter cabinet, and the slag discharge pipe is connected with the inside of the filter cabinet. One end of the rotating shaft and the spiral impeller both extend into the slag discharge pipe, and a mounting hole is provided on the inner wall of one side of the filter cabinet away from the slag discharge pipe. The utility model has reasonable design and good practicability, realizes the classification and purification treatment of sewage, can filter and adsorb and purify the impurity particles in the sewage, has a good purification effect on the sewage, is not easy to cause secondary environmental pollution, and is convenient for cleaning The filtered impurity particles are discharged, and the operation is convenient.
Description
Technical Field
The utility model relates to a sewage treatment technical field specifically is a sewage treatment ware for hierarchical environmental protection engineering.
Background
Sewage treatment is the process of purifying certain water body or reuse's water quality requirement for making sewage reach and discharging it into it, sewage treatment is by each field such as wide application in building, agriculture, traffic, the energy, the petrochemical industry, environmental protection, urban landscape, medical treatment, food and beverage, also more and more the daily life of common people, nowadays, along with people to the reinforcing of environmental protection consciousness, sewage treatment device's use is more and more extensive, sewage treatment device's kind is various, wherein, sewage treatment device is one of the sewage treatment device of comparatively commonly used.
However, in the prior art, a common sewage treatment device has a poor sewage purification effect in a sewage treatment process, cannot realize the classified purification treatment of sewage, is easy to cause secondary pollution to the environment, is inconvenient to discharge filtered impurities in the sewage from the sewage treatment device, and is complicated in operation process.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model provides a not enough to prior art, the utility model provides a sewage treatment ware for hierarchical environmental protection engineering has solved the sewage treatment ware commonly used and is not good to the purification treatment effect of sewage, can not realize carrying out hierarchical purification treatment to sewage, causes the secondary pollution of environment easily, is not convenient for in addition discharge filterable impurity in the sewage from the sewage treatment ware, problem that the operation process is loaded down with trivial details.
(II) technical scheme
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a hierarchical formula sewage treatment ware for environmental protection engineering, including handling the cabinet, the top fixed mounting who handles the cabinet has filter cabinet, filter cabinet's top fixed mounting has the inlet tube, the inlet tube is linked together with filter cabinet is inside, filter cabinet internal fixed mounting has the ARC filter screen, the top of ARC filter screen is equipped with the pivot, fixed mounting has the helical impeller in the pivot, filter cabinet's one side fixed mounting has the scum pipe, the scum pipe is linked together with filter cabinet is inside, the one end of pivot and helical impeller all extends to in the scum pipe, filter cabinet has seted up the mounting hole on keeping away from one side inner wall of scum pipe, filter cabinet keeps away from one side fixed mounting of scum pipe has the motor, the one end that the scum pipe was kept away from in the pivot runs through the mounting hole and with the output shaft end fixed connection of motor, filter cabinet's bottom fixed mounting has the connecting, The device comprises a packing chamber and a purification chamber, the bottom end of a connecting pipe extends into a precipitation chamber, a first water pump is fixedly arranged on one side of a treatment cabinet, a first suction pipe is fixedly connected to the suction end of the first water pump, one end of the first suction pipe, far away from the first water pump, extends into the precipitation chamber, a first discharge pipe is fixedly connected to the discharge end of the first water pump, one end of the first discharge pipe, far away from the first water pump, extends into the filtration cabinet, a fine filter plate is fixedly arranged in the packing chamber, a plurality of biological filler suspension balls positioned below the fine filter plate are placed in the packing chamber, three activated carbon plates are fixedly arranged in the purification chamber at equal intervals, an ultraviolet sterilizing lamp is fixedly arranged on the inner wall of the top of the purification chamber, a drain pipe is fixedly arranged on one side of the treatment cabinet, far away from the first water pump, the drain pipe is communicated with the purification chamber, a second water, the one end that the second water pump was kept away from to the second suction pipe extends to the precipitation intracavity, the discharge end fixedly connected with second discharge pipe of second water pump, the one end that the second water pump was kept away from to the second discharge pipe extends to the intracavity of packing, the suction end fixedly connected with third suction pipe of third water pump, the one end that the third water pump was kept away from to the third suction pipe extends to the intracavity of packing, the discharge end fixedly connected with third discharge pipe of third water pump, the one end that the third water pump was kept away from to the third discharge pipe extends to the purification intracavity.
Preferably, a rectangular hole is formed in the inner wall of one side of the filter cabinet, and a glass observation mirror is fixedly mounted in the rectangular hole.
Preferably, the inner walls of one side of the precipitation cavity, the filling cavity and the purification cavity are provided with cleaning ports, and one side of the treatment cabinet is fixedly provided with three cleaning doors which are respectively matched with the corresponding cleaning ports.
Preferably, the top fixed mounting who handles the cabinet has two pipes of dosing, and two pipes of dosing are linked together with sedimentation chamber and purification chamber respectively, and the end cover is installed to the equal screw thread in top of two pipes of dosing.
Preferably, the rotating shaft is fixedly sleeved with a bearing, and an outer ring of the bearing is fixedly connected with the inner wall of the mounting hole.
Preferably, one side of the slag discharge pipe, which is far away from the filter cabinet, is fixedly provided with a slag discharge valve, and the drain pipe is fixedly provided with a stop valve.
(III) advantageous effects
The utility model provides a sewage treatment ware for hierarchical formula environmental protection engineering. The method has the following beneficial effects:
(1) this sewage treatment ware for hierarchical formula environmental protection engineering, through utilizing the ARC filter screen, impurity particle to getting into in the sewage of filtering the cabinet filters, impurity particle remains on the ARC filter screen, sewage after the filtration flows into the precipitation intracavity through the connecting pipe, through opening the end cover on the dosing pipe at precipitation chamber top, can add appropriate amount flocculating agent to the precipitation intracavity, sewage reacts with the flocculating agent, produce the precipitate, start first water pump work, the sewage of precipitation intracavity is arranged into in the filtering cabinet under the transport of first water pump, utilize the ARC filter screen can filter the precipitate in the sewage, sewage after the filtration flows back to the precipitation intracavity through the connecting pipe.
(2) The sewage treatment device for the grading type environmental protection engineering comprises a first water pump, a second water pump, a third filter plate, a plurality of biological filler suspension balls, an ultraviolet sterilizing lamp, an end cover, a discharge pipe, a stop valve, a filter, a plurality of biological filler suspension balls, a third water pump, a filter and a filter, wherein the sewage in a sedimentation cavity is pumped into the filter cavity under the conveying of the second water pump, the fine particles remained in the sewage are filtered by the fine filter plates, the sewage is adsorbed and purified by the plurality of biological filler suspension balls, the third water pump, the sewage that the purification was accomplished is discharged from the drain pipe to realized carrying out hierarchical purification treatment to sewage, can filter and adsorb the purification to the foreign particle etc. in the sewage, it is good to the purifying effect of sewage, be difficult for causing environmental secondary pollution.
(3) This sewage treatment ware for hierarchical formula environmental protection engineering, through the glass sight glass, can observe the inside impurity particle reserve of filter cabinet, through opening row's sediment valve, the starter motor work, the motor drives pivot and helical impeller and rotates, the rotation that utilizes helical impeller can be carried the impurity particle of persisting on the ARC filter screen to the direction of row's sediment pipe, make impurity particle from row's sediment pipe discharge, three clearance door under can regularly dismantling, to the sedimentation chamber in proper order, the chamber of packing and the purification intracavity portion of purifying clean, removable fine filter of unloading, clean or change fine filter, three activated carbon plate can be dismantled down, clean or change activated carbon plate.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic sectional view of the front view of the present invention;
fig. 3 is an enlarged schematic view of a portion a in fig. 2.
In the figure: 1. a processing cabinet; 2. a filtering cabinet; 3. a water inlet pipe; 4. an arc-shaped filter screen; 5. a rotating shaft; 6. a helical impeller; 7. a slag discharge pipe; 8. a slag discharge valve; 9. mounting holes; 10. a motor; 11. a connecting pipe; 12. a sedimentation chamber; 13. a packing cavity; 14. a purification chamber; 15. a first water pump; 16. a first suction pipe; 17. a first discharge pipe; 18. a fine filter plate; 19. biological filler suspension balls; 20. an activated carbon plate; 21. an ultraviolet sterilizing lamp; 22. a drain pipe; 23. a second water pump; 24. a third water pump; 25. a second suction pipe; 26. a second discharge pipe; 27. a third suction pipe; 28. a third discharge pipe; 29. a glass sight glass; 30. and (6) cleaning the door.
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 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.
As shown in fig. 1-3, the utility model provides a technical solution: a graded sewage treatment device for environmental protection engineering comprises a treatment cabinet 1, a filter cabinet 2 is fixedly installed at the top of the treatment cabinet 1, a water inlet pipe 3 is fixedly installed at the top of the filter cabinet 2, the water inlet pipe 3 is communicated with the interior of the filter cabinet 2, an arc-shaped filter screen 4 is fixedly installed in the filter cabinet 2, a rotating shaft 5 is arranged above the arc-shaped filter screen 4, a spiral impeller 6 is fixedly installed on the rotating shaft 5, a slag discharge pipe 7 is fixedly installed at one side of the filter cabinet 2, the slag discharge pipe 7 is communicated with the interior of the filter cabinet 2, one ends of the rotating shaft 5 and the spiral impeller 6 both extend into the slag discharge pipe 7, a mounting hole 9 is formed in the inner wall of one side of the filter cabinet 2, which is far away from the slag discharge pipe 7, a motor 10 is fixedly installed at one side of the filter cabinet 2, one end of the rotating shaft 5, which is far away from the slag discharge pipe 7, penetrates, the connecting pipe 11 is communicated with the interior of the filter cabinet 2, the treatment cabinet 1 is provided with a precipitation chamber 12, a filling chamber 13 and a purification chamber 14, the bottom end of the connecting pipe 11 extends into the precipitation chamber 12, one side of the treatment cabinet 1 is fixedly provided with a first water pump 15, the suction end of the first water pump 15 is fixedly connected with a first suction pipe 16, one end of the first suction pipe 16 far away from the first water pump 15 extends into the precipitation chamber 12, the discharge end of the first water pump 15 is fixedly connected with a first discharge pipe 17, one end of the first discharge pipe 17 far away from the first water pump 15 extends into the filter cabinet 2, the filling chamber 13 is internally and fixedly provided with a fine filter plate 18, the filling chamber 13 is internally provided with a plurality of biological filling suspension balls 19 positioned below the fine filter plate 18, the purification chamber 14 is internally and fixedly provided with three activated carbon plates 20 at equal intervals, the inner wall of the top of the purification chamber 14 is fixedly provided with an ultraviolet sterilization lamp 21, one side of the, the drain pipe 22 is communicated with the purification cavity 14, one side of the treatment cabinet 1 is fixedly provided with a second water pump 23 and a third water pump 24, the suction end of the second water pump 23 is fixedly connected with a second suction pipe 25, the end, far away from the second water pump 23, of the second suction pipe 25 extends into the precipitation cavity 12, the discharge end of the second water pump 23 is fixedly connected with a second discharge pipe 26, the end, far away from the second water pump 23, of the second discharge pipe 26 extends into the packing cavity 13, the suction end of the third water pump 24 is fixedly connected with a third suction pipe 27, the end, far away from the third water pump 24, of the third suction pipe 27 extends into the packing cavity 13, the discharge end of the third water pump 24 is fixedly connected with a third discharge pipe 28, and the end, far away from the third water pump 24, of the third discharge pipe 28 extends into the.
The rectangular hole has been seted up on the inner wall of one side of filter cabinet 2, the fixed mounting has glass sight glass 29 in the rectangular hole, precipitation chamber 12, the clearance mouth has all been seted up on the inner wall of one side of packing chamber 13 and purification chamber 14, one side fixed mounting of processing cabinet 1 has three clearance door 30, three clearance door 30 respectively with corresponding clearance mouth looks adaptation, the top fixed mounting of processing cabinet 1 has two explosive pipes, two explosive pipes are linked together with precipitation chamber 12 and purification chamber 14 respectively, the end cover is installed to the equal screw thread in top of two explosive pipes, the fixed cover is equipped with the bearing on pivot 5, the outer lane of bearing and the inner wall fixed connection of mounting hole 9, one side fixed mounting that filter cabinet 2 was kept away from to slag discharge pipe 7 has sediment valve 8, fixed mounting has the stop valve on the drain pipe 22.
When in use, the treatment cabinet 1 is provided with a control switch and an external power line, the motor 10, the first water pump 15, the ultraviolet sterilizing lamp 21, the second water pump 23, the third water pump 24, the control switch and the external power line are sequentially and electrically connected to form a loop, the control switch can respectively control the start and stop work of the motor 10, the first water pump 15, the ultraviolet sterilizing lamp 21, the second water pump 23 and the third water pump 24, the three cleaning doors 30 are fixedly arranged at one side of the treatment cabinet 1 through a plurality of screws and can be disassembled, the three cleaning doors 30 respectively seal and block corresponding cleaning openings, the fine filter plate 18 is fixedly arranged in the filling cavity 13 through screws and can be disassembled, the three activated carbon plates 20 are fixedly arranged in the purification cavity 14 through screws and can be disassembled, sewage flows into the filter cabinet 2 through the water inlet pipe 3, and impurity particles in the sewage are filtered by utilizing the arc-shaped filter screen 4, so that the impurity particles are retained on the arc filter screen 4, the filtered sewage flows into the precipitation cavity 12 through the connecting pipe 11, the end cover on the chemical dosing pipe at the top of the precipitation cavity 12 is opened, a proper amount of flocculating agent can be added into the precipitation cavity 12, so that the sewage reacts with the flocculating agent to generate precipitates, the first water pump 15 is started to work, the sewage in the precipitation cavity 12 sequentially flows into the filtration cabinet 2 through the first suction pipe 16, the first water pump 15 and the first discharge pipe 17, so that the precipitates in the sewage can be filtered by using the arc filter screen 4, the filtered sewage flows back into the precipitation cavity 12 through the connecting pipe 11, the first water pump 15 is stopped after the sewage in the precipitation cavity 12 is filtered, the second water pump 23 is started to work, the sewage in the precipitation cavity 12 sequentially flows through the second suction pipe 25, the second water pump 23, The second discharge pipe 26 is pumped into the filling cavity 13, the fine particles remained in the sewage are filtered by the fine filter plate 18, so that the fine particles are remained on the fine filter plate 18, the sewage is adsorbed and purified by the plurality of biological filler suspension balls 19, the sewage in the filling cavity 13 is pumped into the purifying cavity 14 through the third suction pipe 27, the third water pump 24 and the third discharge pipe 28 in sequence by starting the third water pump 24, the ultraviolet sterilizing lamp 21 is started to work, the sewage can be sterilized and disinfected by the ultraviolet rays emitted by the ultraviolet sterilizing lamp 21, a proper amount of disinfectant can be added into the purifying cavity 14 by opening the end cover on the dosing pipe at the top of the purifying cavity 14, the sewage in the purifying cavity 14 is disinfected, the suspended matters, heavy metal ions, residual chlorine, peculiar smell and the like in the sewage can be adsorbed and purified by arranging the three active carbon plates 20, and after the purification is finished, the stop valve on the drain pipe 22 is opened to discharge the purified sewage from the drain pipe 22, thereby realizing the graded purification treatment of the sewage, filtering and adsorbing purification of impurity particles in the sewage, having good purification effect on the sewage and being not easy to cause secondary environmental pollution, the residual quantity of the impurity particles in the filter cabinet 2 can be observed through the glass observation mirror 29, the impurity particles in the filter cabinet 2 can be removed according to the situation, the slag discharge valve 8 is opened, the motor 10 is started to work, the motor 10 drives the rotating shaft 5 and the helical impeller 6 to rotate, the impurity particles remained on the arc-shaped filter screen 4 can be conveyed towards the direction of the slag discharge pipe 7 by utilizing the rotation of the helical impeller 6, so that the impurity particles are discharged from the slag discharge pipe 7, the three cleaning doors 30 can be periodically detached, the interior of the sedimentation chamber 12, the filling chamber 13 and the purification chamber 14 can be cleaned in turn, the fine filter plate 18 can be detached, the fine filter plate 18 is cleaned or replaced by removing the three activated carbon plates 20 and cleaning or replacing the activated carbon plates 20, while details not described in detail in this specification are well known to those skilled in the art.
In conclusion, the sewage treatment device for the graded environmental protection engineering utilizes the arc-shaped filter screen 4 to filter impurity particles in sewage entering the filter cabinet 2, the impurity particles are stored on the arc-shaped filter screen 4, the filtered sewage flows into the sedimentation cavity 12 through the connecting pipe 11, an appropriate amount of flocculating agent can be added into the sedimentation cavity 12 by opening an end cover on a dosing pipe at the top of the sedimentation cavity 12, the sewage reacts with the flocculating agent to generate precipitates, the first water pump 15 is started to work, the sewage in the sedimentation cavity 12 is discharged into the filter cabinet 2 under the conveying of the first water pump 15, the precipitates in the sewage can be filtered by utilizing the arc-shaped filter screen 4, the filtered sewage flows back into the sedimentation cavity 12 through the connecting pipe 11, the sewage in the sedimentation cavity 12 is pumped into the filler 13 under the conveying of the second water pump 23 by starting the second water pump 23 to work, the fine particles remained in the sewage are filtered by using the fine filter plate 18, the sewage is adsorbed and purified by using the plurality of biological filler suspension balls 19, the sewage is pumped into the purification cavity 14 by the transmission of the third water pump 24 by starting the third water pump 24 to work, the ultraviolet sterilizing lamp 21 is started to work, the sewage can be sterilized and disinfected by using the ultraviolet rays emitted by the ultraviolet sterilizing lamp 21, the suspended substances, heavy metal ions, residual chlorine, peculiar smell and the like in the sewage can be adsorbed and purified by opening the end cover on the chemical dosing pipe at the top of the purification cavity 14, a proper amount of disinfectant can be added into the purification cavity 14 to disinfect the sewage in the purification cavity 14, the suspended substances, heavy metal ions, residual chlorine, peculiar smell and the like in the sewage by arranging the three active carbon plates 20, the stop valve on the drain pipe 22 is opened, the purified sewage is discharged from the drain pipe 22, thereby realizing the graded purification treatment of the sewage, and being capable of filtering, adsorbing and purifying the impurity particles and, the utility model has the advantages of good purification effect to sewage, not easy to cause secondary pollution to environment, through the glass observation mirror 29, can observe the impurity particle reserve in the filter cabinet 2, through opening the slag discharge valve 8, start the motor 10 to work, the motor 10 drives the rotating shaft 5 and the helical impeller 6 to rotate, utilize the rotation of the helical impeller 6 to convey the impurity particles remained on the arc filter screen 4 to the direction of the slag discharge pipe 7, so that the impurity particles are discharged from the slag discharge pipe 7, the three cleaning doors 30 can be periodically disassembled, the interior of the sedimentation chamber 12, the filling chamber 13 and the purification chamber 14 can be cleaned in turn, the fine filter plate 18 can be disassembled, the fine filter plate 18 can be cleaned or replaced, the three activated carbon plates 20 can be disassembled, the activated carbon plates 20 can be cleaned or replaced, the utility model has reasonable design and good practicability, the classification purification treatment of sewage can be realized, the impurity particles in sewage can be filtered and adsorbed and purified, the sewage purification device has the advantages of good sewage purification effect, difficulty in causing secondary environmental pollution, convenience in discharging filtered impurity particles and convenience in operation.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021336822.4U CN213141696U (en) | 2020-07-09 | 2020-07-09 | A graded environmental protection engineering sewage processor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021336822.4U CN213141696U (en) | 2020-07-09 | 2020-07-09 | A graded environmental protection engineering sewage processor |
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| Publication Number | Publication Date |
|---|---|
| CN213141696U true CN213141696U (en) | 2021-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021336822.4U Active CN213141696U (en) | 2020-07-09 | 2020-07-09 | A graded environmental protection engineering sewage processor |
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| CN (1) | CN213141696U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113321341A (en) * | 2021-05-24 | 2021-08-31 | 许昌学院 | Effluent treatment plant for pharmaceutical chemistry |
| CN114538706A (en) * | 2022-02-23 | 2022-05-27 | 江苏新裕泰华环保集团有限公司 | Wastewater treatment device for polycrystalline silicon production and use method thereof |
| CN114776596A (en) * | 2022-01-22 | 2022-07-22 | 张卫杰 | A single-stage vane centrifugal pump with the function of draining, filtering and removing residues |
-
2020
- 2020-07-09 CN CN202021336822.4U patent/CN213141696U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113321341A (en) * | 2021-05-24 | 2021-08-31 | 许昌学院 | Effluent treatment plant for pharmaceutical chemistry |
| CN114776596A (en) * | 2022-01-22 | 2022-07-22 | 张卫杰 | A single-stage vane centrifugal pump with the function of draining, filtering and removing residues |
| CN114538706A (en) * | 2022-02-23 | 2022-05-27 | 江苏新裕泰华环保集团有限公司 | Wastewater treatment device for polycrystalline silicon production and use method thereof |
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Effective date of registration: 20250826 Address after: 053000 Hebei Province, Hengshui City, Taicheng District, Zhongxin Street No. 479, Xinxing Commercial and Residential Building, Building 1, Unit 6, Room 702 Patentee after: Xia Wanli Country or region after: China Address before: 300000 Tianjin City Dongli District Development Zone Erwei Road No. 9 Cai Zhi Building 204 Room Patentee before: Tianjin Dashu Environmental Technology Co.,Ltd. Country or region before: China |
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Effective date of registration: 20250912 Address after: 053000 Hebei Province Hengshui City Taicheng District Hebei West Road 666 No. Anzhitinglan 3 Area 11 Building 1-2 Floor 5 Commercial Patentee after: Zhongben (Hebei) Construction Engineering Co.,Ltd. Country or region after: China Address before: 053000 Hebei Province, Hengshui City, Taicheng District, Zhongxin Street No. 479, Xinxing Commercial and Residential Building, Building 1, Unit 6, Room 702 Patentee before: Xia Wanli Country or region before: China |