CN112892680A - Civil engineering waste material piece sorter - Google Patents
Civil engineering waste material piece sorter Download PDFInfo
- Publication number
- CN112892680A CN112892680A CN202110047873.8A CN202110047873A CN112892680A CN 112892680 A CN112892680 A CN 112892680A CN 202110047873 A CN202110047873 A CN 202110047873A CN 112892680 A CN112892680 A CN 112892680A
- Authority
- CN
- China
- Prior art keywords
- belt wheel
- fixedly connected
- belt
- support frame
- electromagnet
- 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.)
- Pending
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Classifications
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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
-
- 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
- B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
-
- 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
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/20—Adding fluid, other than for crushing or disintegrating by fluid energy after crushing or disintegrating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/16—Magnetic separation acting directly on the substance being separated with material carriers in the form of belts
- B03C1/22—Magnetic separation acting directly on the substance being separated with material carriers in the form of belts with non-movable magnets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/30—Combinations with other devices, not otherwise provided for
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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
-
- 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
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C2201/00—Codes relating to disintegrating devices adapted for specific materials
- B02C2201/06—Codes relating to disintegrating devices adapted for specific materials for garbage, waste or sewage
-
- 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
- B07B2230/00—Specific aspects relating to the whole B07B subclass
- B07B2230/01—Wet separation
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention relates to a civil engineering waste block sorting device which comprises a bottom plate, wherein the upper surface of the bottom plate is fixedly connected with a fourth supporting frame, the upper surface of the fourth supporting frame is fixedly connected with a material receiving box with the ground being an inclined plane, the tail end of the inclined plane is provided with two squeezing rollers, and the front surface of the fourth supporting frame is fixedly connected with a J-shaped electromagnet; the bottom plate is fixedly connected with a first support frame, the upper surface of the first support frame is rotatably connected with a first belt wheel and a third belt wheel, and the third belt wheel and the arc-shaped section of the electromagnet are coaxially arranged in parallel and have the same radius; a first belt is arranged on the first belt wheel, the third belt wheel and the electromagnet; a second support frame and a water tank are respectively arranged at two ends of the first belt on the bottom plate; the upper part of the second support frame is rotatably connected with a second belt wheel, and a second belt is arranged on the outer surface of the second belt wheel. The invention can realize the screening of metal and nonmetal by the transmission of the electromagnet and the two belts, simultaneously avoid dust raising, realize the classification diversification and improve the recovery rate.
Description
Technical Field
The invention belongs to the technical field of civil engineering classification equipment, and particularly relates to a classification device for waste blocks in civil engineering.
Background
Waste materials generated in civil engineering are mainly generated after construction, use, demolition and a large disaster, and in order to realize resource recycling, the generated waste material blocks are mostly crushed and then recycled in a series, but due to the variety of the waste material blocks, the waste material blocks may be a series of materials such as metal, concrete, wood and the like. Present intelligent civil engineering waste material piece sorter, nevertheless still have following defect: firstly, most of the waste blocks are subjected to rendering or other treatments by the existing intelligent civil engineering waste block classification device, and the materials of the waste blocks cannot be effectively distinguished by only visual observation; secondly, a plurality of waste blocks are crushed simultaneously, and some waste materials are not crushed, so that the classification efficiency is reduced by complete crushing; thirdly, the civil engineering waste block sorting device also has the problems that the labor operation intensity is high due to low intelligent operation degree, the waste blocks cannot be transferred after being sorted and different waste blocks cannot be sorted in time; fourthly, the dust pollution of the existing intelligent civil engineering waste block sorting device is serious, and the environment is polluted and the personnel are injured.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the civil engineering waste block sorting device, which solves the problems of low crushing efficiency and large dust.
The civil engineering waste block sorting device comprises a bottom plate, wherein one end of the upper surface of the bottom plate is fixedly connected with a fourth supporting frame, the upper surface of the fourth supporting frame is fixedly connected with a material receiving box with an inclined bottom surface, the side surface of the material receiving box is fixedly connected with two second motors, the output ends of the two second motors are both connected with extrusion rollers, the two extrusion rollers are arranged at the tail end of the inclined surface of the material receiving box in parallel and at equal height, and a hollow part is arranged between the two extrusion rollers; the front surface of the fourth supporting frame is fixedly connected with an electromagnet, and the electromagnet is J-shaped; the upper surface of the bottom plate and the lower part of the gap between the two extrusion rollers are fixedly connected with a first support frame, the upper surface of the first support frame is rotatably connected with a first belt wheel and a third belt wheel, and the third belt wheel and the arc-shaped section of the electromagnet are coaxially arranged in parallel and have the same radius; a first belt is arranged on the first belt wheel, the third belt wheel and the electromagnet, and the straight line section of the electromagnet is parallel to the first belt; the first belt wheel and the third belt wheel are connected with the output end of a fourth motor; a second support frame and a water tank are respectively arranged on the upper surface of the bottom plate and at two ends of a first belt of the first support frame, and water is filled in the water tank; the upper part of the second support frame is rotatably connected with a second belt wheel, a second belt is arranged on the outer surface of the second belt wheel, and the second belt wheel is connected with the output end of a third motor fixed on the second support frame; the first belt wheel is positioned at the upper part of the second belt; a storage box is arranged beside the first supporting rod; the electromagnet, the second motor, the third motor and the fourth motor are electrically connected with the controller.
The upper surface of the water tank is fixedly connected with a third support frame, the upper part of the third support frame is fixedly connected with a cross rod, the lower surface of the cross rod is fixedly connected with a telescopic rod, and the lower end of the telescopic rod is fixedly connected with a filter screen; the side surface of the third support frame is fixedly connected with a first motor, and the output end of the first motor is fixedly connected with a chain; the first motor is electrically connected with the controller; the other end of the chain is connected with a movable rod, and the axis of the movable rod is vertical to the transmission direction of the first belt; the lower surface of the movable rod is fixedly connected with the filter screen through a rope; and a stop lever is fixedly connected between the upper side of the filter screen and the movable rod on the inner surface of the water tank.
The filter screen is obliquely arranged in the water tank.
The density of the movable rod is less than that of water.
The sum of the widths of the third belt wheel and the electromagnet is equal to the width of the first belt wheel, and the widths of the third belt wheel and the electromagnet are equal.
The side face of the fourth support frame is fixedly connected with a spray head and is externally connected with a water source and used for spraying water and reducing dust.
The telescopic link is electric telescopic link, and quantity is four.
The invention has the beneficial effects that:
1. compared with the prior art, the invention realizes the preliminary screening of the waste material blocks by arranging the squeeze roll and the electromagnet, thereby achieving the purposes of firstly classifying metals and reasonably utilizing resources;
2. compared with the prior art, the invention avoids dust emission in the classification process by arranging the spray head and the water tank, thereby achieving the purposes of protecting the environment and protecting the health of workers;
3. compared with the prior art, the invention realizes the classification of wood, foam and brick concrete with density less than water by the funnel, the filter screen and the movable rod which are formed by two extrusion rollers and can pass small waste materials, thereby achieving the purposes of more diversified classification and improved recovery rate.
Drawings
FIG. 1 is a schematic view showing an internal structure of a classification apparatus for waste blocks of civil engineering according to the present invention;
FIG. 2 is an enlarged view of the point A in FIG. 1;
FIG. 3 is a view from the B-B direction of FIG. 1;
FIG. 4 is a schematic view showing the structure of a receiving box in the waste block sorting apparatus for civil engineering of the present invention;
wherein the content of the first and second substances,
1-bottom plate, 2-first support frame, 3-second support frame, 4-first belt, 5-electromagnet, 6-third support frame, 7-filter screen, 8-water tank, 9-chain, 10-first motor, 11-cross bar, 12-telescopic bar, 13-movable bar, 14-spray head, 15-second motor, 16-extrusion roller, 17-material receiving box, 18-first belt wheel, 19-second belt, 20-fourth support frame, 21-storage box, 22-stop bar, 23-third belt wheel.
Detailed Description
For better understanding of the present invention, the technical solutions and effects of the present invention will be described in detail by the following embodiments with reference to the accompanying drawings.
As shown in fig. 1-4, a classification device for waste blocks in civil engineering comprises a bottom plate 1, wherein one end of the upper surface of the bottom plate 1 is fixedly connected with a fourth support frame 20, the upper surface of the fourth support frame 20 is fixedly connected with a material receiving box 17 with an inclined bottom surface, two second motors 15 are fixedly connected to the side surfaces of the material receiving box 17, the output ends of the two second motors 15 are both connected with squeezing rollers 16, the two squeezing rollers 16 are arranged at the tail end of the inclined surface of the material receiving box 17 in parallel and at equal height, and a hollow part is formed between the two squeezing rollers 16; the two squeeze rolls 16 are turned oppositely and relatively. The waste material block falling from the inclined surface of the material receiving box 17 and smaller than the gap between the two extrusion rollers 16 directly falls onto the first belt 4 from the gap, and the waste material block larger than the gap between the two extrusion rollers 16 is extruded by the two extrusion rollers 16 to be primarily crushed and then falls onto the first belt 4. The front surface of the fourth supporting frame 20 is fixedly connected with an electromagnet 5, and the electromagnet 5 is J-shaped; the upper surface of the bottom plate 1 and the lower part of the gap between the two extrusion rollers 16 are fixedly connected with a first support frame 2, the upper surface of the first support frame 2 is rotatably connected with a first belt pulley 18 and a third belt pulley, and the third belt pulley and the arc-shaped section of the electromagnet 5 are coaxially arranged in parallel and have the same radius; the sum of the widths of the third belt wheel and the electromagnet 5 is equal to the width of the first belt wheel 18, and the widths of the third belt wheel and the electromagnet 5 are equal; the first belt pulley 18, the third belt pulley and the electromagnet 5 are provided with a first belt 4, and a straight line section of the electromagnet 5 is parallel to the first belt 4; the first belt wheel 18 and the third belt wheel are connected with the output end of a fourth motor; the side surface of the fourth supporting frame 20 is fixedly connected with a spray head 14 which is externally connected with a water source and used for spraying water and reducing dust; a second support frame 3 and a water tank 8 are respectively arranged on the upper surface of the bottom plate 1 and at two ends of a first belt 4 of the first support frame 2, and water is filled in the water tank 8; the upper part of the second support frame 3 is rotatably connected with a second belt wheel, the outer surface of the second belt wheel is provided with a second belt 19, and the second belt wheel is connected with the output end of a third motor fixed on the second support frame 3; the first belt pulley 18 is positioned above the second belt 19; a storage box 21 is arranged beside the first supporting rod. The electromagnet 5, the second motor 15, the third motor and the fourth motor are electrically connected with the controller.
The second belt 19 is positioned below the first belt pulley 18, the second belt 19 is conveyed toward the storage box 21, and the first belt 4 is conveyed toward the water tank 8 in a direction opposite to the conveying direction of the second belt 19.
The upper surface of the water tank 8 is fixedly connected with a third support frame 6, the upper part of the third support frame 6 is fixedly connected with a cross rod 11, the lower surface of the cross rod 11 is fixedly connected with an expansion link 12, and the lower end of the expansion link 12 is fixedly connected with a filter screen 7; the telescopic rods 12 are electric telescopic rods, and the number of the telescopic rods is four. The side surface of the third supporting rod is fixedly connected with a first motor 10, the first motor 10 is electrically connected with the controller, and the output end of the first motor 10 is fixedly connected with a chain 9; the other end of the chain 9 is connected with a movable rod 13, and the axis of the movable rod 13 is vertical to the transmission direction of the first belt 4; the density of the movable rod 13 is less than that of water; the lower surface of the movable rod 13 is fixedly connected with the filter screen 7 through a rope. The telescopic rod 12 contracts to drive the filter screen 7 to move upwards and collect waste blocks with density higher than water density in the water tank 8; the chain 9 is shortened under the driving of the first motor 10, and drives the movable rod 13 to move towards the direction far away from the first belt 4, so that waste material blocks which float on the water surface and are less than the water density are collected; a stop lever 22 is fixedly connected between the upper side of the filter screen 7 and the movable rod 13 on the inner surface of the water tank 8 and used for limiting the movement of the movable rod 13.
The filter screen 7 is obliquely arranged in the water tank 8, and the telescopic rod 12 drives the filter screen 7 to move up and down in the water tank 8.
The working principle of the civil engineering waste block sorting device is as follows:
a waste material block is poured into a material receiving box 17 and moves to the squeezing roller 16 along the inclined plane; the controller sends an electrifying instruction to the electromagnet 5, and the electromagnet 5 is electrified; meanwhile, the controller sends an instruction to the second motor 15, the second motor 15 is started, the second motor 15 drives the squeezing rollers 16 to rotate, a waste material block smaller than the gap between the two squeezing rollers 16 directly falls onto the first belt 4 from the gap, and a waste material block larger than the gap between the two squeezing rollers 16 primarily crushes the waste material block through the two squeezing rollers 16 and then falls onto the first belt 4; meanwhile, the spray head sprays water outwards to remove dust. Meanwhile, the controller sends instructions to the third motor and the fourth motor, the third motor and the fourth motor are started, so that the first belt 4 is conveyed towards the water tank 8, and the second belt 19 is conveyed towards the storage box 21; the waste material block on the first belt 4 moves along with the first belt 4 and moves to an arc-shaped section of a third belt wheel and an electromagnet 5, the metal waste material block is adsorbed on the surface of the first belt 4 through the electromagnet 5 and still moves along with the first belt 4, the waste material which is not adsorbed by the magnet falls into a water tank 8 along with the transmission of the first belt 4, the waste material which is higher than the water density falls, and the waste material which is lower than the water density floats on the water surface; when the metal scrap pieces adsorbed by the electromagnets 5 are conveyed to the first pulley 18 as the first belt 4 is conveyed, since there are no electromagnets 5, the metal scrap pieces fall onto the second belt 19, and the second belt 19 conveys the scrap pieces to the end to fall into the storage box 21. The controller sends an instruction to the telescopic rod 12, the telescopic rod 12 contracts and drives the filter screen 7 to move upwards, and therefore waste materials with the density larger than the water density are filtered to the upper portion of the water tank 8 through the filter screen 7; meanwhile, the controller sends an instruction to the first motor 10 to start the first motor 10, the chain 9 is contracted by the rotation of the first motor 10, the movable rod 13 is driven by the contraction of the chain 9 to approach the end of the chain 9, and waste blocks which float on the water surface and are lower than the water density are collected. The controller sends an extension instruction to the telescopic rod 12, and the telescopic rod 12 drives the filter screen 7 to move downwards; meanwhile, the controller sends an instruction to the first motor 10, the first motor 10 rotates reversely to drive the chain 9 to extend, and the movable rod 13 is pulled to reset in the downward movement process of the filter screen 7.
Claims (7)
1. The utility model provides a civil engineering waste material piece sorter which characterized in that: the automatic feeding device comprises a bottom plate, wherein a fourth supporting frame is fixedly connected to one end of the upper surface of the bottom plate, a material receiving box with an inclined bottom surface is fixedly connected to the upper surface of the fourth supporting frame, two second motors are fixedly connected to the side surface of the material receiving box, the output ends of the two second motors are both connected with squeezing rollers, the two squeezing rollers are arranged at the tail ends of the inclined surface of the material receiving box in parallel and at equal height, and a hollow part is arranged between the two squeezing rollers; the front surface of the fourth supporting frame is fixedly connected with an electromagnet, and the electromagnet is J-shaped; the upper surface of the bottom plate and the lower part of the gap between the two extrusion rollers are fixedly connected with a first support frame, the upper surface of the first support frame is rotatably connected with a first belt wheel and a third belt wheel, and the third belt wheel and the arc-shaped section of the electromagnet are coaxially arranged in parallel and have the same radius; a first belt is arranged on the first belt wheel, the third belt wheel and the electromagnet, and the straight line section of the electromagnet is parallel to the first belt; the first belt wheel and the third belt wheel are connected with the output end of a fourth motor; a second support frame and a water tank are respectively arranged on the upper surface of the bottom plate and at two ends of a first belt of the first support frame, and water is filled in the water tank; the upper part of the second support frame is rotatably connected with a second belt wheel, a second belt is arranged on the outer surface of the second belt wheel, and the second belt wheel is connected with the output end of a third motor fixed on the second support frame; the first belt wheel is positioned at the upper part of the second belt; a storage box is arranged beside the first supporting rod; the electromagnet, the second motor, the third motor and the fourth motor are electrically connected with the controller.
2. A civil engineering waste block sorting device as in claim 1 wherein: the upper surface of the water tank is fixedly connected with a third support frame, the upper part of the third support frame is fixedly connected with a cross rod, the lower surface of the cross rod is fixedly connected with a telescopic rod, and the lower end of the telescopic rod is fixedly connected with a filter screen; the side surface of the third support frame is fixedly connected with a first motor, and the output end of the first motor is fixedly connected with a chain; the first motor is electrically connected with the controller; the other end of the chain is connected with a movable rod, and the axis of the movable rod is vertical to the transmission direction of the first belt; the lower surface of the movable rod is fixedly connected with the filter screen through a rope; and a stop lever is fixedly connected between the upper side of the filter screen and the movable rod on the inner surface of the water tank.
3. A civil engineering waste block sorting device according to claim 2 characterised in that: the filter screen is obliquely arranged in the water tank.
4. A civil engineering waste block sorting device according to claim 2 characterised in that: the density of the movable rod is less than that of water.
5. A civil engineering waste block sorting device as in claim 1 wherein: the sum of the widths of the third belt wheel and the electromagnet is equal to the width of the first belt wheel, and the widths of the third belt wheel and the electromagnet are equal.
6. A civil engineering waste block sorting device as in claim 1 wherein: the side face of the fourth support frame is fixedly connected with a spray head and is externally connected with a water source and used for spraying water and reducing dust.
7. A civil engineering waste block sorting device as in claim 1 wherein: the telescopic link is electric telescopic link, and quantity is four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110047873.8A CN112892680A (en) | 2021-01-14 | 2021-01-14 | Civil engineering waste material piece sorter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110047873.8A CN112892680A (en) | 2021-01-14 | 2021-01-14 | Civil engineering waste material piece sorter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112892680A true CN112892680A (en) | 2021-06-04 |
Family
ID=76114009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110047873.8A Pending CN112892680A (en) | 2021-01-14 | 2021-01-14 | Civil engineering waste material piece sorter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112892680A (en) |
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| JP2001009435A (en) * | 1999-06-30 | 2001-01-16 | Hitachi Ltd | Method and device for treating waste |
| CN205392731U (en) * | 2016-03-10 | 2016-07-27 | 沈阳建筑大学 | Magnetic separator |
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2021
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| CN107282294A (en) * | 2017-08-16 | 2017-10-24 | 安吉智居装饰设计工程有限公司 | A kind of construction site rubbish crushes classification retracting device |
| CN208050148U (en) * | 2018-03-20 | 2018-11-06 | 张玥 | A kind of agricultural seed screening plant |
| CN108262154A (en) * | 2018-03-21 | 2018-07-10 | 新乡市振英机械设备有限公司 | A kind of building waste separation recoverer with environment-friendly function |
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| CN211887384U (en) * | 2019-11-27 | 2020-11-10 | 贵州神农米业有限公司 | Impurity removing device for rice |
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|---|
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Application publication date: 20210604 |