CN105536965A - Grinding and screening integrated technical device for coal samples of multiple particle sizes - Google Patents
Grinding and screening integrated technical device for coal samples of multiple particle sizes Download PDFInfo
- Publication number
- CN105536965A CN105536965A CN201511018808.3A CN201511018808A CN105536965A CN 105536965 A CN105536965 A CN 105536965A CN 201511018808 A CN201511018808 A CN 201511018808A CN 105536965 A CN105536965 A CN 105536965A
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- China
- Prior art keywords
- grinding tool
- grinding
- brace table
- removable
- sieve
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
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- 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
- B07B1/34—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens jigging or moving to-and-fro perpendicularly or approximately perpendiculary to the plane of the screen
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a grinding and screening integrated technical device for coal samples of multiple particle sizes. The grinding and screening integrated technical device comprises a grinding tool supporting table, a feeding opening, an upper-layer grinding tool, a middle material guide opening, a lower-layer grinding tool, a tail-end material guide opening, an inclined material guide smooth pipe, a linear vibrating screen, an upper-layer grinding tool motor, a lower-layer grinding tool motor, a belt and a base. The grinding and screening integrated technical device is mainly used for laboratory coal powder preparing and screening of the coal samples of multiple particle sizes. The grinding and screening integrated technical device is novel in design, and the problems that the traditional crushed coal screening process is troublesome and consumes power, and the operation field is dirty, disorderly and bad are solved. The coal samples are firstly subjected to rough grinding and then subjected to fine grinding by means of combination of the upper-layer grinding tool and the lower-layer grinding tool, the comminuted coal samples pass through the linear vibrating screen of multi-layer meshes, and the coal samples of different particle sizes are obtained through separation. The whole operation process is carried out in a closed environment, streamline work of comminuting and screening is achieved, and the aims of time and labor saving, high efficiency and cleanliness are achieved.
Description
Technical field
The invention belongs to laboratory coal sample reduction, pulverized coal preparation, the technical fields such as many particle diameters coal sample screening, be specifically related to a kind of many particle diameters coal sample mill sieve integral type technique device.
Background technology
In order to make theoretical research and engineering practice effectively be connected, laboratory research becomes the important means that colliery researcher carries out theoretical research.Coal is as research object, and in vitro display form is mainly raw coal, broken coal, coal dust etc., and wherein in order to meet the needs of theoretical research and engineering objective mensuration, usually need coal dust in experiment, even the coal dust of different-grain diameter is studied.Such as, the Industrial Analysis of coal, moulded coal makes, and the mensuration of other coal character various all needs to sample according to certain size grade scale.At present, when pulverized coal preparation, the broken coal laboratory apparatus that laboratory is commonly used mostly is closed pulverizer; When the screening of different-grain diameter coal sample is chosen, laboratory mostly is artificial sieve, also has part Experiment room to adopt motor-vibro screen.Wherein, closed pulverizer is when pulverizing coal sample, and each coal sample of pulverizing all needs artificial loading and takes out, and operator sucks too much coal dust, and there is limiting quantity (grating disk volume) in each comminuted coal amount, in addition, the time-consuming effort of artificial sieve that screening process adopts, Polluted area is large, it is too much that operator sucks coal dust, and the poor effect of artificial vibration screening, even if adopt motor-vibro screen, also there is the problem of limiting screen component.Therefore, in order to change the bothersome effort of conventional size reduction screening process, the problem that operation site is filthy, should from broken coal, operational sequence of screening coal integration is set about, and realizes streamlined operation, reaches the effect of efficient pulverizing screening.By the technique device of integration, whole experimentation is carried out in a controlled closed environment, and then alleviates the burden of operator, also can ensure the clean clean of Experimental Area in whole experimentation.
Summary of the invention
The present invention is wasted time and energy in broken coal screening process to solve in laboratory, Polluted area is large, operator sucks coal dust amount problem too much, provide a kind of many particle diameters coal sample mill sieve integral type technique device, this technique device, by the combination of crush-grind system and screening system, achieves comminution, the operation of screening streamlined, and then realize time saving and energy saving, efficiently clean object.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of many particle diameters coal sample mill sieve integral type technique device, comprise grinding tool brace table, charging aperture, upper strata grinding tool, middle material guide port, lower floor's grinding tool, tail end material guide port, inclination guide plain tube, linear vibrating screen, upper strata grinding tool motor, lower floor's grinding tool motor, belt, pedestal, grinding tool brace table installs charging aperture from top to bottom successively, upper strata grinding tool, middle material guide port, lower floor's grinding tool, tail end material guide port, and grinding tool brace table is installed on pedestal, inclination guide plain tube upper end connects tail end material guide port, lower end connects linear vibrating screen.
Described grinding tool brace table comprises grinding tool mouth, lower grinding tool mouth, belt pulley, scraper plate, bearing holder (housing, cover), wherein goes up the dead slot up and down that grinding tool mouth and lower grinding tool mouth are designed to grinding tool brace table respectively, and two belt pulleys are arranged on the outer end of left bearing cover inside the upper and lower grinding tool mouth of grinding tool brace table, two scraper plates are arranged on inside grinding tool mouth and lower grinding tool mouth respectively, and are fixed on pedestal by grinding tool brace table.
Described charging aperture is inverted trapezoidal, inner wall smooth, and end opening end face is rectangle, and in the same way, lower port length is slightly less than the length of upper strata grinding tool to the center line of the long limit of rectangle and upper strata grinding tool, and charging aperture is arranged in the draw-in groove of grinding tool brace table upper end.
Described upper strata grinding tool is by removable grinding roller, fixing grinding roller, removable grinding roller propulsion plant, removable grinding roller brace table composition, wherein removable grinding roller brace table comprises scraper plate, bearing holder (housing, cover), belt pulley, wherein removable grinding roller brace table is installed on grinding tool mouth place on grinding tool brace table, removable grinding roller two ends are nested in the diaxon bearing sleeve of removable grinding roller brace table respectively, fixing grinding roller two ends are nested in the diaxon bearing sleeve on the upside of grinding tool brace table respectively, removable grinding roller propulsion plant is arranged on removable grinding roller brace table, belt pulley is connected to outside removable grinding roller brace table bearing holder (housing, cover), scraper plate is arranged on inside removable grinding roller brace table.
Described middle material guide port is inverted trapezoidal, inner wall smooth, lower port center line just to lower floor's grinding tool center line, the same endfeed mouth of installation method.
Described lower floor's tool design upper layer grinding tool is identical.
Described tail end material guide port center line is just to lower end grinding tool center line, and inner wall smooth, is smoothly connected with inclination guide plain tube.
Described linear vibrating screen by sieve nest, spring, pedestal form, be connected by spring between sieve nest with pedestal, wherein sieve nest is by vibratory sieve charging aperture, upper sieve, intermediate screening, lower screen, bi-motor, seal cover, discharging opening forms, upper sieve, intermediate screening and lower screen are arranged on the top of sieve nest, centre and bottom respectively, and the order number of the order number < lower screen of the order number < intermediate screening of upper sieve, bi-motor is arranged on the bottom of sieve nest.
Described linear vibrating screen and tail end material guide port are smoothly connected by inclination guide plain tube.
Described upper strata grinding tool motor, lower floor's grinding tool motor drives upper strata grinding tool and lower floor's grinding tool respectively by belt, and it is grinding tool motor at the middle and upper levels, and lower floor's grinding tool motor respectively fills two belt pulleys, two corresponding respective respectively grinding rollers.
Accompanying drawing explanation
Fig. 1 is overall schematic of the present invention
Fig. 2 is grinding tool brace table sectional view in the present invention
Fig. 3 is levels grinding tool schematic diagram in the present invention
Fig. 4 is movable grinding tool schematic diagram in levels grinding tool in the present invention
Fig. 5 is top view of the present invention
Fig. 6 is charging aperture top view in the present invention
Fig. 7 is centre bearer bush schematic diagram of the present invention
Fig. 8 is linear vibrating screen front view of the present invention
Fig. 9 is linear vibrating screen left view of the present invention
Figure 10 is motor schematic diagram of the present invention
Figure 11 is motor pulley of the present invention and grinding tool belt pulley connection diagram
In figure 1, grinding tool brace table; 2, charging aperture; 3, upper strata grinding tool; 4, middle material guide port; 5, lower floor's grinding tool; 6, tail end material guide port; 7, inclination guide plain tube; 8, linear vibrating screen; 9, upper strata grinding tool motor; 10, lower floor's grinding tool motor; 11, belt; 12, pedestal; 101, upper grinding tool mouth; 102, lower grinding tool mouth; 103,104,308,508, belt pulley; 105,106,305,505, scraper plate; 107,109, left bearing cover; 108,110, right bearing cover; 301 (501), removable grinding roller; 302 (502), fixing grinding roller; 303 (503), removable grinding roller propulsion plant; 304 (504), removable grinding roller brace table; 306 (506), 307 (507), bearing holder (housing, cover); 801, sieve nest; 802, spring; 803, pedestal; 8011, vibratory sieve charging aperture; 8012, upper sieve; 8013, intermediate screening, 8014, lower screen; 8015, bi-motor; 8016, seal cover; 8017, discharging opening 8017.
Detailed description of the invention
As shown in Figure 1 to 11, the present invention is a kind of many particle diameters coal sample mill sieve integral type technique device, comprises grinding tool brace table 1, charging aperture 2, upper strata grinding tool 3, middle material guide port 4, lower floor's grinding tool 5, tail end material guide port 6, inclination guide plain tube 7, linear vibrating screen 8, upper strata grinding tool motor 9, lower floor's grinding tool motor 10, belt 11, pedestal 12 forms.Grinding tool brace table 1 comprises grinding tool mouth 101, lower grinding tool mouth 102, belt pulley 103,104, scraper plate 105,106, left bearing cover 107,109, right bearing cover 108,110.Grinding tool brace table 1 is fixed on pedestal 12, scraper plate 105,106 are arranged on grinding tool mouth 101 respectively, inside lower grinding tool mouth 102, wherein go up the dead slot up and down that grinding tool mouth 101 and lower grinding tool mouth 102 are designed to grinding tool brace table 1 respectively, belt pulley 103,104 are arranged on the outer end that left bearing overlaps 107,109, scraper plate 105 respectively, 106 are arranged on inside grinding tool mouth 101 and lower grinding tool mouth 102 respectively, and are fixed on pedestal 12 by grinding tool brace table 1; Charging aperture 2 is inverted trapezoidal, inner wall smooth, and end opening end face is rectangle, and in the same way, lower port length is slightly less than the length of upper strata grinding tool 3 to the center line of the long limit of rectangle and upper strata grinding tool 3, and charging aperture 2 is arranged in the draw-in groove of grinding tool brace table 1 upper end; Upper strata grinding tool 3 is by removable grinding roller 301, and fixing grinding roller 302, removable grinding roller propulsion plant 303, removable grinding roller brace table 304 forms.Wherein removable grinding roller brace table 304 comprises scraper plate 305, bearing holder (housing, cover) 306,307, belt pulley 308.Removable grinding roller brace table 304 is installed on grinding tool mouth 101 place on grinding tool brace table.Removable grinding roller 301 two ends are nested in bearing holder (housing, cover) 306 respectively, in 307, fixing grinding roller 302 two ends are nested in bearing holder (housing, cover) 107 respectively, in 108, removable grinding roller propulsion plant 303 is arranged on removable grinding roller brace table 304, belt pulley 308 is connected to outside bearing holder (housing, cover) 306, and scraper plate 305 is arranged on inside removable grinding roller brace table 304; Middle material guide port 4 is inverted trapezoidal, inner wall smooth, and lower port center line is just to lower floor's grinding tool 5 center line, and installation method is with charging aperture 2; Lower floor's grinding tool 5 is by removable grinding roller 501, and fixing grinding roller 502, removable grinding roller propulsion plant 503, removable grinding roller brace table 504 forms.Wherein removable grinding roller brace table 504 comprises scraper plate 505, bearing holder (housing, cover) 506,507, belt pulley 508.Removable grinding roller brace table 504 is installed on grinding tool mouth 102 place under grinding tool brace table.Removable grinding roller 501 two ends are nested in bearing holder (housing, cover) 506 respectively, in 507, fixing grinding roller 502 two ends are nested in bearing holder (housing, cover) 109 respectively, in 110, removable grinding roller propulsion plant 503 is arranged on removable grinding roller brace table 504, belt pulley 508 is connected to outside bearing holder (housing, cover) 506, and scraper plate 505 is arranged on inside removable grinding roller brace table 504; Tail end material guide port 6 center line is just to lower end grinding tool 5 center line, and inner wall smooth, is smoothly connected with inclination guide plain tube 7; Linear vibrating screen 8 is by sieve nest 801, and spring 802, pedestal 803 forms, and is connected between sieve nest 801 with pedestal 803 by spring 802.Wherein sieve nest 801 is by vibratory sieve charging aperture 8011, upper sieve 8012, intermediate screening 8013, lower screen 8014, bi-motor 8015, seal cover 8016, discharging opening 8017 forms, wherein upper sieve 8012, intermediate screening 8013, lower screen 8014 is arranged on the top of sieve nest respectively, middle and bottom, and the order number of the order number < lower screen 8014 of the order number < intermediate screening 8013 of upper sieve 8012, bi-motor 8015 is arranged on the bottom of sieve nest 801; Linear vibrating screen 8 is connected by inclination guide plain tube 7 with tail end material guide port 6.Upper strata grinding tool motor 9 drives belt pulley 308 and belt pulley 508 with lower floor's grinding tool motor 10 respectively by belt 11.
Introduce the principle of a kind of many particle diameters coal sample mill of the present invention sieve integral type technique device below:
A kind of many particle diameters coal sample mill sieve integral type technique device core is the upper and lower two-layer crush-grind system of grinding tool combination and the screening system of straight-line oscillation screen sections, two motors drive upper and lower two-layer grinding tool respectively, totally 4 grinding rollers in upper and lower two-layer grinding tool, two grinding rollers are wherein had to be in stationary state (upper and lower two-layer grinding tool all has, and is positioned at the same side).In the course of work, upper strata grinding tool two grinding roller spacing is greater than lower floor's grinding roller spacing, and upper strata is used for corase grind, and lower floor is used for fine grinding, and upper and lower two-layer grinding roller spacing all regulates by removable grinding roller propulsion plant.Through the coal sample of comminution, guide is to linear vibrating screen, linear vibrating screen utilizes vibrating motor exciting as vibration source, make coal sample tossed on screen cloth, simultaneously moving linearly forward, coal sample enters the charging aperture of linear vibrating screen equably from tail end material guide port through inclination guide plain tube, by different model screen cloth produce several order numbers oversize, screenings, discharge from respective outlet respectively.Whole process is carried out in sealed environment, and as requested to the comminution screening again of screening thing, can achieve comminution, the operation of screening streamlined, and then realize time saving and energy saving, efficiently clean object.
Claims (10)
1. the coal sample of particle diameter more than a mill sieve integral type technique device, comprises grinding tool brace table, charging aperture, upper strata grinding tool, middle material guide port, lower floor's grinding tool, tail end material guide port, inclination guide plain tube, linear vibrating screen, upper strata grinding tool motor, lower floor's grinding tool motor, belt, pedestal, grinding tool brace table installs charging aperture from top to bottom successively, upper strata grinding tool, middle material guide port, lower floor's grinding tool, tail end material guide port, and grinding tool brace table is installed on pedestal, inclination guide plain tube upper end connects tail end material guide port, and lower end connects linear vibrating screen.
2. described one many particle diameters coal sample mill sieve integral type technique device according to claim 1, it is characterized in that: described grinding tool brace table comprises grinding tool mouth, lower grinding tool mouth, belt pulley, scraper plate, bearing holder (housing, cover), wherein go up the dead slot up and down that grinding tool mouth and lower grinding tool mouth are designed to grinding tool brace table respectively, two belt pulleys are arranged on the outer end of left bearing cover inside the upper and lower grinding tool mouth of grinding tool brace table, two scraper plates are arranged on inside grinding tool mouth and lower grinding tool mouth respectively, and are fixed on pedestal by grinding tool brace table.
3. described one many particle diameters coal sample mill sieve integral type technique device according to claim 1, it is characterized in that: described charging aperture is inverted trapezoidal, inner wall smooth, end opening end face is rectangle, the center line of the long limit of rectangle and upper strata grinding tool in the same way, lower port length is slightly less than the length of upper strata grinding tool, and charging aperture is arranged in the draw-in groove of grinding tool brace table upper end.
4. described one many particle diameters coal sample mill sieve integral type technique device according to claim 1, it is characterized in that: described upper strata grinding tool is by removable grinding roller, fixing grinding roller, removable grinding roller propulsion plant, removable grinding roller brace table composition, wherein removable grinding roller brace table comprises scraper plate, bearing holder (housing, cover), belt pulley, removable grinding roller brace table is installed on grinding tool mouth place on grinding tool brace table in addition, removable grinding roller two ends are nested in the diaxon bearing sleeve of removable grinding roller brace table respectively, fixing grinding roller two ends are nested in the diaxon bearing sleeve on the upside of grinding tool brace table respectively, removable grinding roller propulsion plant is arranged on removable grinding roller brace table, belt pulley is connected to outside removable grinding roller brace table bearing holder (housing, cover), scraper plate is arranged on inside removable grinding roller brace table.
5. described one many particle diameters coal sample mill sieve integral type technique device according to claim 1, is characterized in that: described middle material guide port is inverted trapezoidal, inner wall smooth, lower port center line just to lower floor's grinding tool center line, the same endfeed mouth of installation method.
6. described one many particle diameters coal sample mill sieve integral type technique device according to claim 1, is characterized in that: described lower floor's tool design upper layer grinding tool is identical.
7. described one many particle diameters coal sample mill sieve integral type technique device according to claim 1, is characterized in that: described tail end material guide port center line is just to lower end grinding tool center line, and inner wall smooth, is smoothly connected with inclination guide plain tube.
8. described one many particle diameters coal sample mill sieve integral type technique device according to claim 1, it is characterized in that: described linear vibrating screen is by sieve nest, spring, pedestal forms, be connected by spring between sieve nest with pedestal, wherein sieve nest is by vibratory sieve charging aperture, upper sieve, intermediate screening, lower screen, bi-motor, seal cover, discharging opening forms, upper sieve, intermediate screening and lower screen are arranged on the top of sieve nest respectively, centre and bottom, and the order number of the order number < lower screen of the order number < intermediate screening of upper sieve, bi-motor is arranged on the bottom of sieve nest.
9. described one many particle diameters coal sample mill sieve integral type technique device according to claim 8, is characterized in that: described linear vibrating screen and tail end material guide port are smoothly connected by inclination guide plain tube.
10. described one many particle diameters coal sample mill sieve integral type technique device according to claim 1, it is characterized in that: described upper strata grinding tool motor, lower floor's grinding tool motor drives upper strata grinding tool and lower floor's grinding tool respectively by belt, it is grinding tool motor at the middle and upper levels, lower floor's grinding tool motor respectively fills two belt pulleys, two corresponding respective respectively grinding rollers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511018808.3A CN105536965A (en) | 2015-12-30 | 2015-12-30 | Grinding and screening integrated technical device for coal samples of multiple particle sizes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511018808.3A CN105536965A (en) | 2015-12-30 | 2015-12-30 | Grinding and screening integrated technical device for coal samples of multiple particle sizes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105536965A true CN105536965A (en) | 2016-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511018808.3A Pending CN105536965A (en) | 2015-12-30 | 2015-12-30 | Grinding and screening integrated technical device for coal samples of multiple particle sizes |
Country Status (1)
| Country | Link |
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| CN (1) | CN105536965A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107321608A (en) * | 2017-07-24 | 2017-11-07 | 望谟县兴旺魔芋产业发展有限责任公司 | A kind of konjaku powder screening plant |
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| EP0255504A2 (en) * | 1986-07-29 | 1988-02-03 | Maschinenfabrik Liezen Gesellschaft m.b.H. | Crushing device for lump material, especially rock or coal |
| WO1992020515A1 (en) * | 1991-05-21 | 1992-11-26 | Crine Rene | Roll press, removable cladding and method of fitting |
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| CN202191926U (en) * | 2011-08-05 | 2012-04-18 | 河北钢铁股份有限公司邯郸分公司 | Improved disc mill |
| CN203155283U (en) * | 2013-03-20 | 2013-08-28 | 浙江农林大学 | Coal mine crushing and screening machine |
| CN204429383U (en) * | 2014-12-12 | 2015-07-01 | 合肥鑫月雪食品机械有限公司 | A kind of food flour mill |
| CN204602594U (en) * | 2015-01-19 | 2015-09-02 | 刘艺琼 | One main laver nursery shell is cultivated base and is automatically selected filter device |
| CN204710521U (en) * | 2015-06-23 | 2015-10-21 | 李俊 | A kind of scrap glass circulation reducing mechanism |
| CN205323956U (en) * | 2015-12-30 | 2016-06-22 | 中国矿业大学(北京) | Sieve integral type device is ground to many particle diameters coal sample |
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2015
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0255504A2 (en) * | 1986-07-29 | 1988-02-03 | Maschinenfabrik Liezen Gesellschaft m.b.H. | Crushing device for lump material, especially rock or coal |
| WO1992020515A1 (en) * | 1991-05-21 | 1992-11-26 | Crine Rene | Roll press, removable cladding and method of fitting |
| CN2577952Y (en) * | 2002-09-20 | 2003-10-08 | 张志强 | Multifunctional crushing and shrinkage dividing combined sampler |
| CN202191926U (en) * | 2011-08-05 | 2012-04-18 | 河北钢铁股份有限公司邯郸分公司 | Improved disc mill |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107321608A (en) * | 2017-07-24 | 2017-11-07 | 望谟县兴旺魔芋产业发展有限责任公司 | A kind of konjaku powder screening plant |
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Application publication date: 20160504 |
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