CN204685257U - A kind of environmental protection complete dry method mechanism sand equipment - Google Patents
A kind of environmental protection complete dry method mechanism sand equipment Download PDFInfo
- Publication number
- CN204685257U CN204685257U CN201520396569.4U CN201520396569U CN204685257U CN 204685257 U CN204685257 U CN 204685257U CN 201520396569 U CN201520396569 U CN 201520396569U CN 204685257 U CN204685257 U CN 204685257U
- Authority
- CN
- China
- Prior art keywords
- environmental protection
- dry method
- air
- sand equipment
- complete dry
- 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
Landscapes
- Combined Means For Separation Of Solids (AREA)
Abstract
The utility model relates to a kind of sand equipment processed, particularly relates to a kind of environmental protection complete dry method mechanism sand equipment.The technical problems to be solved in the utility model is to provide a kind of environmental protection complete dry method mechanism sand equipment.In order to solve the problems of the technologies described above, the utility model provides so a kind of environmental protection complete dry method mechanism sand equipment, include feed bin, disintegrating machine, high-frequency screen extension set, batcher, air sieve, humidifier, deduster and storage powder tank, below feed bin, disintegrating machine is installed, high-frequency screen extension set is arranged on below disintegrating machine, and high-frequency screen extension set is arranged on above batcher, is at least provided with an air sieve between batcher and humidifier, air sieve is connected with deduster, and deduster is connected with storage powder tank.Reduce investment and production cost, reach comprehensive environmental protection, grain composition is excellent, production cost is low, the effect of energy-saving and emission-reduction, and achieve low cost the residue produced in broken for mine production process is discarded the effect that rubble is transformed into the Machine-made Sand of high-quality.
Description
Technical field
The utility model relates to a kind of sand equipment processed, particularly relates to a kind of environmental protection complete dry method mechanism sand equipment.
Background technology
Sand is the indispensable material of concrete construction, and along with the development of China's economic, the past has been faced exhausted crisis at present by the natural sand resource of exploiting in a large number! In the near future, cement concrete is by 100% employment mechanism sand, and erect image in the past gravel becomes small crushed stone like that, has arrived now the epoch being replaced natural sand by machine sand.
At present, natural sand is used to proceed to the process of machine sand from exploitation, the sandstone manufacturing and processing enterprise of the domestic overwhelming majority, adopt wet method washed-out sand, not only complex manufacturing, processing cost is high, and water resource waste is serious, the degree polluted and harm are very large, have been put into the planning of 2015 national environmental protection emphasis regulations.
Domestic existing southern road machine company and Japanese longevity skill grind the Machine-made Sand complete set of equipments V7 that company technique is developed cooperatively, represent the top standard of Machine-made Sand industry, but there is purchase cost costliness (more than 1,000 ten thousand yuans/cover), shortcoming that disposal ability is very low, the applying unit (as: nuclear power sand) of minority state-owned enterprise and specific use is only had to use at present, the market demand that domestic infrastructure sand using amount is huge cannot be met at all, and the demand of numerous sandstone manufacturing and processing enterprise.
We are put into practice by years of researches, adopt SLKG Machine-made Sand selection by winnowing air sieve, thoroughly solve the problem of production capacity restriction, have developed 160 tons per hour of SLKG160() and 300 tons per hour of SLKG300() the environmental protection complete dry method mechanism sand equipment of two profiles number, the production capacity demand of lot of domestic and foreign sandstone manufacturing and processing enterprise can be met, and fundamentally reduce use cost and purchase cost.
Utility model content
(1) technical problem that will solve
The utility model shortcoming that equipment capacity is low in order to overcome, cost is high, the technical problems to be solved in the utility model is to provide a kind of environmental protection complete dry method mechanism sand equipment.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides so a kind of environmental protection complete dry method mechanism sand equipment, include feed bin, disintegrating machine, high-frequency screen extension set, batcher, air sieve, humidifier, deduster and storage powder tank, below feed bin, disintegrating machine is installed, high-frequency screen extension set is arranged on below disintegrating machine, and high-frequency screen extension set is arranged on above batcher, is at least provided with an air sieve between batcher and humidifier, air sieve is connected with deduster, and deduster is connected with storage powder tank.
Preferably, described air sieve, includes body, air inlet, one-level disperser, charging aperture, air outlet, secondary disperser, discharge bucket; Described one-level disperser is the flase floor of one group of array obliquely, described secondary disperser is one group of closed lattice plate overlooked cross-sectional area downwards and reduce gradually, described air inlet is arranged on the left side of body, described charging aperture is arranged on the top of body, the below of described one-level disperser charging aperture in body, described air outlet is at the upper right quarter of body, and described discharge bucket is in the bottom of body, and described secondary disperser is arranged on the inside of discharge bucket.
Preferably, also include charging adjustable plate, described charging adjustable plate is in the inside of charging aperture, and the adjustable angle of charging adjustable plate, regulates the flow of charging.
Preferably, described body is except air inlet, air outlet, charging aperture, discharge bucket, and all the other places are airtight.
Preferably, the laminar winds adjustable for air quantity that described air inlet enters or whirlwind; Described air outlet connects cleaner, air output and suction adjustable.
Preferably, the air in described discharge bucket is negative pressure.
Preferably, the distance of the flase floor in the vertical direction of described one-level disperser is that 50mm-200mm is adjustable.
Preferably, the distance of the flase floor in the vertical direction of described secondary disperser is 50mm-200mm.
Preferably, described disintegrating machine is VS1 type disintegrating machine.
Preferably, described batcher is GZG type batcher.
Preferably, described deduster is XM type deduster.
Operation principle: gravel to be delivered in disintegrating machine by conveyer by feed bin and carried out fragmentation, after fragmentation completes, material good for fragmentation is delivered to high-frequency screen extension set by elevator sieve, to be back to disintegrating machine again broken via returning conveying device for the material of bulk, meet the demands qualified compound enter batcher, batcher is equably to air sieve feed, air sieves the accept again sieved out and enters in humidifier, after humidification, drain into stockpile through conveyer under without airborne dust, the uniform condition of grating for subsequent use.The graininess dust of air sieve drains into storage powder tank through deduster, then by storage powder canned enter transport vehicle, be transported to other desired factory by transport vehicle.
Feed bin, disintegrating machine, high-frequency screen extension set, batcher, air sieve, humidifier, deduster and storage powder tank
The operation principle of Machine-made Sand air sieve: material enters through charging aperture, regulate the flow that the Angle ambiguity material of charging adjustable plate enters, first the material entered from charging aperture fully scatters through one-level disperser, fill the whirlwind that scattered material enters by air inlet again and dispel separation, the material that granularity is less than 0.075mm is blown to air outlet, collected by the cleaner sucking-off being connected to air outlet, the material that granularity is greater than 0.075mm falls into discharge bucket, completes first separation; The material falling into discharge bucket spreads again through secondary disperser, and because the air in discharge bucket is negative pressure, the material that a small amount of granularity also contained after first separation is less than 0.075mm is inhaled into air outlet discharge again, completes secondary separation; Automatically the flow regulating material to enter according to different sandstone types by PLC control system, intake, air output are to suitable matching value, and the raw meal particle size that discharge bucket is flowed out reaches the requirement of producing needed for concrete.
(3) beneficial effect
The advantage of SLKG environmental protection complete dry method sand equipment and feature:
1, owing to have employed SLKG mechanism selection by winnowing air sieve, fundamentally solve technological process and air material sieving technology Problems existing, significantly improve production capacity, reduce investment and production cost (complete set of equipments of production capacity per hour 160 tons only needs more than 500 ten thousand yuans);
2, environmental protection comprehensively, equipment adopts totally-enclosed design, and air sieves into negative pressure state, and dedusting does not leak, and realizes dust zero discharge, and disintegrating apparatus adopts vibration-proof rubber, and noise is low, and vibration is slight.
3, grain composition is excellent, and owing to adopting VS1 vertical-spindle hammer crusher, grain shape is excellent, grating is stable, and solid cubic content rate is high, complete alternative natural sand
4, modulus of fineness and content of stone powder adjustable controlled, because a complete set of equipment adopts PLC automation control system, can regulate accordingly according to different ore, proportion, amplitude of variation controls between ± 0.06, solves the root problem that current Machine-made Sand content of stone powder is high.
5, production cost is low, due to the significantly lifting of production capacity, produces electric consumption, the attrition cost of one ton of Machine-made Sand, is equivalent to about 1/5th of same category of device cost.
6, high financial profit: adopt Machine-made Sand configuration concrete, 20kg cement saved by below C40 concrete every cubic metre, more than C50 concrete, except saving cement, also can save additive in a large number, concrete flowability is good, improves pumpability, decrease the problem of wearing and tearing and booster, improve concrete intensity and performance.
7, energy-saving and emission-reduction: the complete sand equipment processed of SLKG environmental protection adopts modularization stereochemical structure, and floor space is little, and a production line takes up an area less than 500 square metres, adopts Full automatic closed to produce, thoroughly solves the problem of pollution.
8, achieve low cost and the residue produced in broken for mine production process is discarded the effect that rubble is transformed into the Machine-made Sand of high-quality.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of air sieve.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further described.
embodiment 1
A kind of environmental protection complete dry method mechanism sand equipment, as shown in Figure 1-2, include feed bin 1, disintegrating machine 2, high-frequency screen extension set 3, batcher 4, air sieve 5, humidifier 6, deduster 7 and storage powder tank 8, disintegrating machine 2 is installed below feed bin 1, high-frequency screen extension set 3 is arranged on below disintegrating machine 2, and high-frequency screen extension set 3 is arranged on above batcher 4, is at least provided with an air sieve 5 between batcher 4 and humidifier 6, air sieve 5 is connected with deduster 7, and deduster 7 is connected with storage powder tank 8.
Described air sieve 5, includes body 51, air inlet 52, one-level disperser 53, charging aperture 55, air outlet 56, secondary disperser 57, discharge bucket 58; Described one-level disperser 53 is the flase floor of one group of array obliquely, described secondary disperser 57 is one group of closed lattice plate overlooked cross-sectional area downwards and reduce gradually, described air inlet 52 is arranged on the left side of body 51, described charging aperture 55 is arranged on the top of body 51, the below of described one-level disperser 53 charging aperture 55 in body 51, described air outlet 56 is at the upper right quarter of body 51, described discharge bucket 58 is in the bottom of body 51, and described secondary disperser 57 is arranged on the inside of discharge bucket 58.
Also include charging adjustable plate 54, described charging adjustable plate 54 is in the inside of charging aperture 55, and the adjustable angle of charging adjustable plate 54, regulates the flow of charging.
Described body 51 is except air inlet 52, air outlet 56, charging aperture 55, discharge bucket 58, and all the other places are airtight.
The laminar winds adjustable for air quantity that described air inlet 52 enters or whirlwind; Described air outlet 56 connects cleaner, air output and suction adjustable.
Air in described discharge bucket 58 is negative pressure.
The distance of the flase floor in the vertical direction of described one-level disperser 53 is that 50mm-200mm is adjustable.
The distance of the flase floor in the vertical direction of described secondary disperser 57 is 50mm-200mm.
Operation principle: gravel to be delivered in disintegrating machine 2 by conveyer by feed bin 1 and carried out fragmentation, after fragmentation completes, material good for fragmentation is delivered to high-frequency screen extension set 3 by elevator sieve, to be back to disintegrating machine 2 again broken via returning conveying device for the material of bulk, meet the demands qualified compound enter batcher 4, batcher 4 sieves 5 feed to air equably, the accept that air sieve 5 sieves out again enters in humidifier 6, after humidification, drain into stockpile 10 through conveyer under without airborne dust, the uniform condition of grating for subsequent use.The graininess dust of air sieve 5 drains into storage powder tank 8 through deduster 7, then loads transport vehicle 9 by storage powder tank 8, is transported to other desired factory by transport vehicle 9.
Feed bin 1, disintegrating machine 2, high-frequency screen extension set 3, batcher 4, air sieve 5, humidifier 6, deduster 7 and storage powder tank 8
The operation principle of Machine-made Sand air sieve 5: material enters through charging aperture 55, regulate the flow that the Angle ambiguity material of charging adjustable plate 54 enters, first the material entered from charging aperture 55 fully scatters through one-level disperser 53, fill the whirlwind that scattered material enters by air inlet 52 again and dispel separation, the material that granularity is less than 0.075mm is blown to air outlet 56, collected by the cleaner sucking-off being connected to air outlet 56, the material that granularity is greater than 0.075mm falls into discharge bucket 58, completes first separation; The material falling into discharge bucket 58 spreads again through secondary disperser 57, and because the air in discharge bucket 58 is negative pressure, the material that a small amount of granularity also contained after first separation is less than 0.075mm is again inhaled into air outlet 56 and discharges, and completes secondary separation; Automatically the flow regulating material to enter according to different sandstone types by PLC control system, intake, air output, to suitable matching value, make the raw meal particle size that discharge bucket 58 flows out reach the requirement of producing needed for concrete.
embodiment 2
A kind of environmental protection complete dry method mechanism sand equipment, as shown in Figure 1-2, include feed bin 1, disintegrating machine 2, high-frequency screen extension set 3, batcher 4, air sieve 5, humidifier 6, deduster 7 and storage powder tank 8, disintegrating machine 2 is installed below feed bin 1, high-frequency screen extension set 3 is arranged on below disintegrating machine 2, and high-frequency screen extension set 3 is arranged on above batcher 4, is at least provided with an air sieve 5 between batcher 4 and humidifier 6, air sieve 5 is connected with deduster 7, and deduster 7 is connected with storage powder tank 8.
Described air sieve 5, includes body 51, air inlet 52, one-level disperser 53, charging aperture 55, air outlet 56, secondary disperser 57, discharge bucket 58; Described one-level disperser 53 is the flase floor of one group of array obliquely, described secondary disperser 57 is one group of closed lattice plate overlooked cross-sectional area downwards and reduce gradually, described air inlet 52 is arranged on the left side of body 51, described charging aperture 55 is arranged on the top of body 51, the below of described one-level disperser 53 charging aperture 55 in body 51, described air outlet 56 is at the upper right quarter of body 51, described discharge bucket 58 is in the bottom of body 51, and described secondary disperser 57 is arranged on the inside of discharge bucket 58.
Also include charging adjustable plate 54, described charging adjustable plate 54 is in the inside of charging aperture 55, and the adjustable angle of charging adjustable plate 54, regulates the flow of charging.
Described body 51 is except air inlet 52, air outlet 56, charging aperture 55, discharge bucket 58, and all the other places are airtight.
The laminar winds adjustable for air quantity that described air inlet 52 enters or whirlwind; Described air outlet 56 connects cleaner, air output and suction adjustable.
Air in described discharge bucket 58 is negative pressure.
The distance of the flase floor in the vertical direction of described one-level disperser 53 is that 50mm-200mm is adjustable.
The distance of the flase floor in the vertical direction of described secondary disperser 57 is 50mm-200mm.
Described disintegrating machine 2 is VS1 type disintegrating machine 2.
Described batcher 4 is GZG type batcher 4.
Described deduster 7 is XM type deduster 7.
embodiment 3
A kind of environmental protection complete dry method mechanism sand equipment, as shown in Figure 1-2, include feed bin 1, disintegrating machine 2, high-frequency screen extension set 3, batcher 4, air sieve 5, humidifier 6, deduster 7 and storage powder tank 8, disintegrating machine 2 is installed below feed bin 1, high-frequency screen extension set 3 is arranged on below disintegrating machine 2, and high-frequency screen extension set 3 is arranged on above batcher 4, is at least provided with an air sieve 5 between batcher 4 and humidifier 6, air sieve 5 is connected with deduster 7, and deduster 7 is connected with storage powder tank 8.
Described air sieve 5, includes body 51, air inlet 52, one-level disperser 53, charging aperture 55, air outlet 56, secondary disperser 57, discharge bucket 58; Described one-level disperser 53 is the flase floor of one group of array obliquely, described secondary disperser 57 is one group of closed lattice plate overlooked cross-sectional area downwards and reduce gradually, described air inlet 52 is arranged on the left side of body 51, described charging aperture 55 is arranged on the top of body 51, the below of described one-level disperser 53 charging aperture 55 in body 51, described air outlet 56 is at the upper right quarter of body 51, described discharge bucket 58 is in the bottom of body 51, and described secondary disperser 57 is arranged on the inside of discharge bucket 58.
The above embodiment only have expressed preferred embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion, improvement and substitute, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (10)
1. an environmental protection complete dry method mechanism sand equipment, it is characterized in that, include feed bin (1), disintegrating machine (2), high-frequency screen extension set (3), batcher (4), air sieve (5), humidifier (6), deduster (7) and storage powder tank (8), in feed bin (1) below, disintegrating machine (2) is installed, high-frequency screen extension set (3) is arranged on disintegrating machine (2) below, high-frequency screen extension set (3) is arranged on batcher (4) top, air sieve (5) is at least installed between batcher (4) and humidifier (6), air sieve (5) is connected with deduster (7), deduster (7) is connected with storage powder tank (8).
2. a kind of environmental protection according to claim 1 complete dry method mechanism sand equipment, it is characterized in that, described air sieve (5), includes body (51), air inlet (52), one-level disperser (53), charging aperture (55), air outlet (56), secondary disperser (57), discharge bucket (58), described one-level disperser (53) is the flase floor of one group of array obliquely, described secondary disperser (57) is one group of closed lattice plate overlooked cross-sectional area downwards and reduce gradually, described air inlet (52) is arranged on the left side of body (51), described charging aperture (55) is arranged on the top of body (51), the below of described one-level disperser (53) charging aperture (55) in body (51), described air outlet (56) upper right quarter in body (51), described discharge bucket (58) is in the bottom of body (51), described secondary disperser (57) is arranged on the inside of discharge bucket (58).
3. a kind of environmental protection according to claim 2 complete dry method mechanism sand equipment, it is characterized in that, also include charging adjustable plate (54), described charging adjustable plate (54) is in the inside of charging aperture (55), the adjustable angle of charging adjustable plate (54), regulates the flow of charging.
4. a kind of environmental protection according to claim 2 complete dry method mechanism sand equipment, is characterized in that, described body (51) is except air inlet (52), air outlet (56), charging aperture (55), discharge bucket (58), and all the other places are airtight.
5. a kind of environmental protection according to claim 2 complete dry method mechanism sand equipment, is characterized in that, the laminar winds adjustable for air quantity that described air inlet (52) enters or whirlwind; Described air outlet (56) connects cleaner, air output and suction adjustable, the air in described discharge bucket (58) is negative pressure.
6. a kind of environmental protection according to claim 2 complete dry method mechanism sand equipment, is characterized in that, the distance of the flase floor in the vertical direction of described one-level disperser (53) is that 50mm-200mm is adjustable.
7. a kind of environmental protection according to claim 2 complete dry method mechanism sand equipment, is characterized in that, the distance of the flase floor in the vertical direction of described secondary disperser (57) is 50mm-200mm.
8. a kind of environmental protection according to claim 1 complete dry method mechanism sand equipment, is characterized in that, described disintegrating machine (2) is VS1 type disintegrating machine (2).
9. a kind of environmental protection according to claim 1 complete dry method mechanism sand equipment, is characterized in that, described batcher (4) is GZG type batcher (4).
10. a kind of environmental protection according to claim 1 complete dry method mechanism sand equipment, is characterized in that, described deduster (7) is XM type deduster (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520396569.4U CN204685257U (en) | 2015-05-30 | 2015-06-10 | A kind of environmental protection complete dry method mechanism sand equipment |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520360872 | 2015-05-30 | ||
| CN2015203608729 | 2015-05-30 | ||
| CN201520396569.4U CN204685257U (en) | 2015-05-30 | 2015-06-10 | A kind of environmental protection complete dry method mechanism sand equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204685257U true CN204685257U (en) | 2015-10-07 |
Family
ID=54225598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520396569.4U Active CN204685257U (en) | 2015-05-30 | 2015-06-10 | A kind of environmental protection complete dry method mechanism sand equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204685257U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111167589A (en) * | 2020-01-10 | 2020-05-19 | 湘潭玉峰新材料科技有限公司 | Dry sand making process |
-
2015
- 2015-06-10 CN CN201520396569.4U patent/CN204685257U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111167589A (en) * | 2020-01-10 | 2020-05-19 | 湘潭玉峰新材料科技有限公司 | Dry sand making process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104907151A (en) | Storied building type sand production line and sand production method thereof | |
| CN103133031B (en) | Underground coal and gangue separation, conveying and filling method and equipment | |
| WO2020098707A1 (en) | Air dry sand coal sorting system | |
| CN204454894U (en) | Integrated fine work type environmental protection dry method sand production system | |
| WO2016127869A1 (en) | Ore sorting system | |
| CN204294609U (en) | A kind of fixed building rubbish process for producing line | |
| CN204841882U (en) | Building formula system sand production line | |
| CN111229426A (en) | Flexible production system of high-quality grit aggregate | |
| CN104446071A (en) | Dry sand making process | |
| WO2016127870A1 (en) | Ore sorting system | |
| CN210097911U (en) | Dry-type sand production line | |
| CN205217099U (en) | Piece mechanism sand production system | |
| CN202155245U (en) | Impurity removing system | |
| CN204685257U (en) | A kind of environmental protection complete dry method mechanism sand equipment | |
| CN203526067U (en) | Concrete drying aggregate continuous multi-stage winnowing grading device | |
| CN220195096U (en) | Building type sand and stone aggregate integrated equipment capable of producing coarse and fine aggregate | |
| CN204620182U (en) | A kind of building waste process washing cellular construction | |
| CN204523748U (en) | A kind of building waste treatment system | |
| CN104326689B (en) | A kind of sand production system processed | |
| CN207153912U (en) | A kind of weedtree particle grading device | |
| CN115445741A (en) | Method for preparing sand by utilizing rock waste high-yield preparation machine | |
| CN204523175U (en) | A kind of building waste process dust collecting system | |
| CN212370350U (en) | Preparation system of waste concrete reclaimed sand powder | |
| CN211865355U (en) | Phosphorite does not have useless processing system that handles | |
| CN209829577U (en) | Large-scale aerodynamic separation sieve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 341000 Hongxing Village, Shuidong Town, Zhanggong District, Ganzhou City, Jiangxi Province Patentee after: Jiangxi Android Mining Machinery Engineering Technology Co., Ltd Address before: Seven village 341005 Jiangxi province Zhanggong District of Ganzhou City, East Town building 1-1 Patentee before: GANZHOU ANZHUO MINING MACHINERY MECHANICAL TECHNICAL SERVICES Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210315 Address after: 341000 room 706-710, building 9, jiangshanli phase III, No. 36, Meiguan Avenue, Zhanggong District, Ganzhou City, Jiangxi Province Patentee after: Jiangxi shankai Technology Co.,Ltd. Address before: 341000 dongyanshan, group 1, Hongxing Village, Shuidong Town, Zhanggong District, Ganzhou City, Jiangxi Province Patentee before: Jiangxi Android Mining Machinery Engineering Technology Co.,Ltd. |