CN107649355B - A kind of centrifugal Sand screen - Google Patents
A kind of centrifugal Sand screen Download PDFInfo
- Publication number
- CN107649355B CN107649355B CN201711103390.5A CN201711103390A CN107649355B CN 107649355 B CN107649355 B CN 107649355B CN 201711103390 A CN201711103390 A CN 201711103390A CN 107649355 B CN107649355 B CN 107649355B
- Authority
- CN
- China
- Prior art keywords
- shell
- rotation axis
- fixedly connected
- screen
- feed pipe
- 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.)
- Expired - Fee Related
Links
- 239000004576 sand Substances 0.000 title claims abstract description 48
- 238000007599 discharging Methods 0.000 claims abstract description 19
- 239000011148 porous material Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 17
- 238000012216 screening Methods 0.000 abstract description 15
- 238000007873 sieving Methods 0.000 abstract description 10
- 239000004575 stone Substances 0.000 abstract description 9
- 239000002699 waste material Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 230000001360 synchronised effect Effects 0.000 abstract description 3
- 239000000843 powder Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/06—Cone or disc shaped screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/08—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers
- B02C18/10—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers with drive arranged above container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B2201/00—Details applicable to machines for screening using sieves or gratings
- B07B2201/04—Multiple deck screening devices comprising one or more superimposed screens
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Pulverization Processes (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention discloses a kind of centrifugal Sand screens, including shell；The case top is communicated with feed pipe, is equipped with rotation axis in feed pipe, the part that rotation axis is located in feed pipe is fixedly connected with helical blade；The rotation axis is located at helical blade lower position and is fixedly connected with crushing knife, is equipped with conical screen below crushing knife.The present invention is by being equipped with helical blade and variable-frequency motor, control charging rate, guarantee to sieve the crushing teeth that the husky effect present invention is equipped with conical screen and is arranged on, under the action of the centrifugal force, accelerate the separating rate of the waste residue of the big quality such as stone, screening efficiency is improved, husky block is crushed by the crushing teeth of rotation, sand material is avoided to waste；The present invention is equipped with and moves up and down circular screen, carries out postsearch screening to waste residue, recycles remaining fine sand；The present invention is equipped with the spiral discharging roller to link with rotation axis, realizes synchronous material discharging, and discharging thoroughly, improves the efficiency for sieving husky operation.
Description
Technical field
The present invention relates to building machinery field, specifically a kind of centrifugal Sand screen.
Background technique
Sand sieving machine is to copy the artificial working principle for utilizing inclined sieve mesh screen sand, using horizontal roll screen barrel, and guarantees stream
Between multi-turn internal helical blades in screen drum can it is more than the continuous circle of roller screen five, thus so that sand material rolled, slided repeatedly and sufficiently from
It dissipates, separation；It is mutually pushed different from big small powder caused by tilting roller screen, pile things on, screening process is hasty；Also different from tilting vibration
Big small powder tramp, the mixing of sieve；In addition there are also the board-like sand sieving machines of vibrating screen.
Sand sieving machine is common building machinery, by screening to sand material, sifts out the fine sand for meeting building granularity requirements；
Traditional sand sieving machine is mostly the board-like sand sieving machine of vibrating screen and drum-type sand sieving machine, this in two sand sieving machine be mostly horizontal type structure, land occupation
It is larger；In addition traditional sand sieving machine screening efficiency is lower, often there is moist hardened husky block in sand material, and sieve cannot be right well
Husky block is crushed, and is caused the waste of sand material, while the sieve pore of sieve is easy to happen blocking, be further reduced the effect of screening
Rate.
Summary of the invention
The purpose of the present invention is to provide a kind of centrifugal Sand screens, to solve mentioned above in the background art ask
Topic.
To achieve the above object, the invention provides the following technical scheme:
A kind of centrifugal Sand screen, including shell and variable-frequency motor；The case top is communicated with feed pipe, charging
Rotation axis is equipped in pipe, rotation axis extends to above feed pipe and is connected with variable-frequency motor；The rotation axis is located in feed pipe
Part be fixedly connected with helical blade；The rotation axis is located at helical blade lower position and is fixedly connected with crushing knife；It is described
Conical screen is equipped with below crushing knife；Equally distributed crushing teeth is fixedly connected on the conical screen outer wall；Under the conical screen
Side is equipped with circular screen, and housing exterior walls, which are located on the outside of circular screen, is equipped with slag-drip opening；The circular screen bottom is fixedly connected with
Ring block；The ring block is slidably connected with inner walls, and ring block bottom is fixedly connected with gag lever post, and gag lever post, which is set in, to be turned
On moving axis；The gag lever post is extended in inner walls and is slidably connected with shell, and inner walls relative position is equipped with vertical
Sliding slot, in the sliding slot of gag lever post nesting on the inner wall of the housing；The gag lever post bottom is fixedly connected with symmetrical episphere convex block, turns
Moving axis, which is located at below gag lever post, is fixedly connected with rotating bar, and symmetrical lower semisphere convex block is fixedly connected in rotating bar；The shell
Internal bottom is equipped with discharge nozzle, is connected at the top of discharge nozzle with shell；Spiral discharging roller, spiral discharging roller are equipped in the discharge nozzle
It is rotatablely connected with inner walls, spiral discharging roller is connected with driven shaft by driving belt, and driven shaft is connect simultaneously with housing into rotation
It extends in shell；The driven shaft passes through drive bevel gear group and rotation axis connection.
As a further solution of the present invention: being fixedly connected at the top of the variable-frequency motor and feed pipe.
As a further solution of the present invention: being evenly distributed with sieve pore on the conical screen outer wall.
As a further solution of the present invention: the crushing teeth is tapered.
As a further solution of the present invention: the conical screen bottom is fixedly connected with the rotating shaft by cross bar.
As a further solution of the present invention: the ring block is equipped with inside inclined-plane.
As a further solution of the present invention: the same circle that the episphere convex block and lower semisphere convex block are generally aligned in the same plane
Zhou Shang.
Compared with prior art, the beneficial effects of the present invention are: the present invention is by being equipped with helical blade and variable-frequency motor, control
Charging rate processed guarantees to sieve husky effect；The present invention is equipped with crushing knife, disperses to sand material, is convenient for subsequent screening；The present invention is set
The crushing teeth for having conical screen and being arranged on accelerates the separating rate of the waste residue of the big quality such as stone, mentions under the action of the centrifugal force
High screening efficiency is crushed husky block by the crushing teeth of rotation, improves screening rate, sand material is avoided to waste；The present invention is equipped with
Circular screen is moved up and down, postsearch screening is carried out to waste residue, recycles remaining fine sand；The present invention is equipped with and links with rotation axis
Spiral discharging roller, realizes synchronous material discharging, and discharging thoroughly, improves the efficiency for sieving husky operation.
Detailed description of the invention
Fig. 1 is the cross-sectional view of centrifugal Sand screen；
Fig. 2 is the top view of conical screen in centrifugal Sand screen；
Fig. 3 is the perspective view of annular screen in centrifugal Sand screen.
In figure: 1- shell；2- feed pipe；3- rotation axis；4- variable-frequency motor；5- helical blade；6- conical screen；7- spiral prominence
Item；8- crushing knife；9- circular screen；10- ring block；11- gag lever post；12- episphere convex block；13- rotating bar；14- lower semisphere
Convex block；15- drive bevel gear group；16- driven shaft；17- driving belt；18- spiral discharging roller；19- discharge nozzle；20- slag-drip opening.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1~3, in the embodiment of the present invention, a kind of centrifugal Sand screen, including shell 1 and variable-frequency motor
4；It is communicated with feed pipe 2 at the top of the shell 1, rotation axis 3 is equipped in feed pipe 2, rotation axis 3 extends to 2 top of feed pipe simultaneously
It is connected with variable-frequency motor 4, is fixedly connected at the top of variable-frequency motor 4 and feed pipe 2；Variable-frequency motor 4 and external power supply are electrically connected；Institute
It states the part that rotation axis 3 is located in feed pipe 2 and is fixedly connected with helical blade 5, by changing the revolving speed of variable-frequency motor 4, spiral
The revolving speed of blade 5, and then change the speed of charging；The rotation axis 3 is located at 5 lower position of helical blade and is fixedly connected with crushing
Knife 8, crushing knife 8 break up husky block；It is equipped with conical screen 6 below the crushing knife 8, is evenly distributed with sieve pore on 6 outer wall of conical screen；
It is fixedly connected with equally distributed crushing teeth 7 on 6 outer wall of conical screen, crushing teeth 7 is tapered；7 pairs of crushing teeth husky blocks carry out
It is broken；6 bottom of conical screen is fixedly connected by cross bar with rotation axis 3；Circular screen 9, ring are equipped with below the conical screen 6
Shape sieve 9 screens fine sand remaining in stone again；1 outer wall of shell, which is located on the outside of circular screen 9, is equipped with deslagging
Mouth 20, stone etc. are discharged from this；9 bottom of circular screen is fixedly connected with ring block 10, and ring block 10 is equipped with inwardly oblique
Face；The ring block 10 is slidably connected with 1 inner wall of shell, and 10 bottom of ring block is fixedly connected with gag lever post 11, and 11 sets of gag lever post
It is located in rotation axis 11；The gag lever post 11 extends to 1 inner wall of shell and is slidably connected with shell 1, and 1 inner wall of shell is equipped with vertical
Sliding slot；11 bottom of gag lever post is equipped with symmetrical episphere convex block 12, and rotation axis 3, which is located at below gag lever post 11, to be fixedly connected
There is rotating bar 13, symmetrical lower semisphere convex block 14, episphere convex block 12 and lower semisphere convex block 14 are fixedly connected in rotating bar 13
On the same circumference being generally aligned in the same plane；Bottom is equipped with discharge nozzle 19 in the shell 1, and 19 top of discharge nozzle is connected to shell 1；
Spiral discharging roller 18 is equipped in the discharge nozzle 19, spiral discharging roller 18 and 1 inner wall of shell are rotatablely connected, and spiral discharging roller 18 is logical
It crosses driving belt 17 and is connected with driven shaft 16, driven shaft 16 and shell 1 are rotatablely connected and extend in shell 1；The driven shaft
16 are connect by drive bevel gear group 15 with rotation axis 3；Rotation axis 3 passes through driving gear set 15, driven shaft 16 and driving belt
17 drive spiral discharging roller 18 to rotate, and discharge.
The working principle of the invention is: sand material to be screened being put into from feed pipe 2, starts variable-frequency motor 4, variable-frequency motor
4 drive helical blade 5 to rotate by rotation axis 3, are fed, and by controlling the revolving speed of variable-frequency motor 4, control helical blade 5
Revolving speed, and then control charging rate, guarantee to sieve husky effect；Sand material is fallen into shell 1 into feed pipe 2 is crossed, and rotation axis 3 drives powder
Broken knife 8 rotates, and then sand material is broken up, husky convenient for subsequent sieve；It breaks up rear sand material more uniformly to fall on conical screen 6, rotate
Axis 3 drives conical screen 6 to rotate, the screening that conical screen 6 rotates sand material, meets the sand material of granule size from conical screen 6
Sieve pore is fallen, and 7 pairs of crushing teeth husky blocks of the rotation on 6 surface of conical screen are further crushed, and is improved screening effect, is avoided sand
Material waste；The stone of greater particle size or other sundries under the influence of centrifugal force, accelerate to be detached from fine sand, improve point of stone
From speed, screening efficiency is improved；The stone and a small amount of fine sand thrown away is fallen on circular screen 9, and rotation axis 3 drives rotating bar
13 rotations, rotating bar 13 drive lower semisphere convex block 14 to rotate, when lower semisphere convex block 14 squeezes episphere convex block 12, gag lever post
11 drive ring blocks 10 and circular screen 9 move up and down, and improve the screening efficiency of circular screen 9, and circular screen 9 is avoided to block,
Screening recycling is carried out to the fine sand fallen into stone simultaneously, fine sand is avoided to waste；Stone etc. is discharged from slag-drip opening 20, by taper
The fine sand that sieve 6 and circular screen 9 sift out drops downward into discharge nozzle 19, and rotation axis 3 passes through drive bevel gear group 15, driven shaft 16
It drives spiral discharging roller 18 to rotate with driving belt 17, discharges, realize synchronous material discharging, discharge more thorough, improve
Sieve husky operating efficiency.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (6)
1. a kind of centrifugal Sand screen, including shell (1) and variable-frequency motor (4)；It is characterized in that, shell (1) top
Portion is communicated with feed pipe (2), is equipped with rotation axis (3) in feed pipe (2), and rotation axis (3) is extended to above feed pipe (2) and connected
There are variable-frequency motor (4)；The rotation axis (3) is located at the part in feed pipe (2) and is fixedly connected with helical blade (5)；Described turn
Moving axis (3) is located at helical blade (5) lower position and is fixedly connected with crushing knife (8)；Conical screen is equipped with below the crushing knife (8)
(6)；Equally distributed crushing teeth (7) are fixedly connected on conical screen (6) outer wall；Ring is equipped with below the conical screen (6)
Shape sieve (9), shell (1) outer wall, which is located on the outside of circular screen (9), is equipped with slag-drip opening (20)；Circular screen (9) bottom is solid
Surely it is connected with ring block (10), ring block (10) is equipped with inside inclined-plane；The ring block (10) and the sliding of shell (1) inner wall connect
It connects, ring block (10) bottom is fixedly connected with gag lever post (11), and gag lever post (11) is set on rotation axis (11)；The gag lever post
(11) it extending in shell (1) inner wall and is slidably connected with shell (1), shell (1) inner wall relative position is equipped with vertical sliding slot,
Gag lever post (11) is nested in the sliding slot of shell (1) inner wall；Gag lever post (11) bottom is fixedly connected with symmetrical episphere
Convex block (12), rotation axis (3), which is located at below gag lever post (11), to be fixedly connected with rotating bar (13), and rotating bar is fixedly connected on (13)
There is symmetrical lower semisphere convex block (14)；The interior bottom of the shell (1) is equipped with discharge nozzle (19), discharge nozzle (19) top and shell
(1) it is connected to；Spiral discharging roller (18) are equipped in the discharge nozzle (19), spiral discharging roller (18) and the rotation of shell (1) inner wall connect
It connects, spiral discharging roller (18) is connected with driven shaft (16) by driving belt (17), and driven shaft (16) and shell (1) are rotatablely connected
And it extends in shell (1)；The driven shaft (16) is connect by drive bevel gear group (15) with rotation axis (3).
2. the centrifugal Sand screen of one kind according to claim 1, which is characterized in that the variable-frequency motor (4) with into
It is fixedly connected at the top of expects pipe (2).
3. the centrifugal Sand screen of one kind according to claim 1, which is characterized in that on conical screen (6) outer wall
It is evenly distributed with sieve pore.
4. the centrifugal Sand screen of one kind according to claim 1, which is characterized in that the crushing teeth (7) is tapered.
5. the centrifugal Sand screen of one kind according to claim 1, which is characterized in that conical screen (6) bottom is logical
Cross bar is crossed to be fixedly connected with rotation axis (3).
6. the centrifugal Sand screen of one kind according to claim 1, which is characterized in that the episphere convex block (12) and
On the same circumference that lower semisphere convex block (14) is generally aligned in the same plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711103390.5A CN107649355B (en) | 2017-11-10 | 2017-11-10 | A kind of centrifugal Sand screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711103390.5A CN107649355B (en) | 2017-11-10 | 2017-11-10 | A kind of centrifugal Sand screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107649355A CN107649355A (en) | 2018-02-02 |
| CN107649355B true CN107649355B (en) | 2019-11-01 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711103390.5A Expired - Fee Related CN107649355B (en) | 2017-11-10 | 2017-11-10 | A kind of centrifugal Sand screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107649355B (en) |
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| CN108405340B (en) * | 2018-06-11 | 2020-02-04 | 张翔 | Multistage screening sand equipment for building |
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| CN109092660A (en) * | 2018-07-11 | 2018-12-28 | 杨昊宇 | A kind of screening installation of sandstone for building |
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| CN112474252A (en) * | 2020-11-12 | 2021-03-12 | 刘蒙 | Sieve grain device for raw material processing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU163127U1 (en) * | 2016-03-09 | 2016-07-10 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Красноярский государственный аграрный университет" | GRAVITY-VIBRATION SEPARATOR |
| CN206009206U (en) * | 2016-07-26 | 2017-03-15 | 丁炎龙 | A kind of Semen sojae atricolor classified screening device for carrying sack-filling device |
| CN205868446U (en) * | 2016-08-05 | 2017-01-11 | 黄河科技学院 | Doublestage list excitation nonlinearity multi -screening reducing mechanism |
| CN206325819U (en) * | 2016-09-30 | 2017-07-14 | 中建八局第一建设有限公司 | A kind of Sand screen for building |
| CN106391469B (en) * | 2016-10-11 | 2017-06-16 | 李斌凯 | Firmly build engineering and separate vertical Sand screen |
| CN206435447U (en) * | 2016-10-17 | 2017-08-25 | 四川盛众节能科技有限公司 | A kind of material screening device |
| CN107185828A (en) * | 2017-06-08 | 2017-09-22 | 惠安县灿鑫新材料科技有限公司 | A kind of pneumatic concentration paddy rice screening and removing impurities device |
| CN107159573A (en) * | 2017-06-30 | 2017-09-15 | 阮霞伟 | A kind of construction screening machine |
| CN107307459A (en) * | 2017-07-28 | 2017-11-03 | 吴连庆 | A kind of feed manufacturing drying screening plant |
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2017
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| CN107649355A (en) | 2018-02-02 |
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Address after: No.28, shepherd Road, Yunshan street, Lanxi City, Jinhua City, Zhejiang Province Applicant after: Hu Jiawei Address before: 321200 No. 98 Hushan Road, Tongqin Town, Wuyi County, Jinhua City, Zhejiang Province Applicant before: Hu Jiawei |
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Effective date of registration: 20190926 Address after: 321200 No. 98 Hushan Road, Tongqin Town, Wuyi County, Jinhua City, Zhejiang Province Applicant after: Hu Jiawei Address before: 242400, Anhui, Wuhu province Nanling County town, Yuejin Village, new house Xu village 20 Applicant before: Du Xin |
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